diff --git a/src/app/actions/getProblem.ts b/src/app/actions/getProblem.ts
index 7fd776c..223f2eb 100644
--- a/src/app/actions/getProblem.ts
+++ b/src/app/actions/getProblem.ts
@@ -2,11 +2,11 @@
 'use server';
 
 import prisma from '@/lib/prisma';
-import { Locale } from '@/generated/client'; // ✅ 导入 enum Locale
+import { Locale } from '@/generated/client';
 import { serialize } from 'next-mdx-remote/serialize';
 
-export async function getProblemData(problemId: string, locale: string) {
-    const selectedLocale = locale as Locale; // ✅ 强制转换 string 为 Prisma enum
+export async function getProblemData(problemId: string, locale?: string) {
+    const selectedLocale = locale as Locale;
 
     const problem = await prisma.problem.findUnique({
         where: { id: problemId },
@@ -17,7 +17,7 @@ export async function getProblemData(problemId: string, locale: string) {
             },
             localizations: {
                 where: {
-                    locale: selectedLocale, // ✅ 这里使用枚举
+                    locale: selectedLocale,
                 },
             },
         },
diff --git a/src/components/creater/edit-code-panel.tsx b/src/components/creater/edit-code-panel.tsx
index 5479e92..8b73b59 100644
--- a/src/components/creater/edit-code-panel.tsx
+++ b/src/components/creater/edit-code-panel.tsx
@@ -1,11 +1,14 @@
-'use client';
+"use client"
 
-import { useEffect, useState } from 'react';
+import React, { useEffect, useState } from 'react';
 import { getProblemData } from '@/app/actions/getProblem';
+import { updateProblemTemplate } from '@/components/creater/problem-maintain';
 import { Label } from '@/components/ui/label';
 import { Button } from '@/components/ui/button';
-import { Card, CardContent, CardHeader, CardTitle } from "@/components/ui/card";
-import { CoreEditor } from "@/components/core-editor";
+import { Card, CardContent, CardHeader, CardTitle } from '@/components/ui/card';
+import { CoreEditor } from '@/components/core-editor';
+import { Language } from '@/generated/client';
+import { toast } from 'sonner';
 
 interface Template {
   language: string;
@@ -14,65 +17,50 @@ interface Template {
 
 interface EditCodePanelProps {
   problemId: string;
-  onUpdate?: (data: Template) => Promise<{ success: boolean }>;
 }
 
-// 模拟保存函数
-async function saveTemplate(data: Template): Promise<{ success: boolean }> {
-  try {
-    console.log('保存模板数据:', data);
-    await new Promise(resolve => setTimeout(resolve, 500));
-    return { success: true };
-  } catch {
-    return { success: false };
-  }
-}
-
-export default function EditCodePanel({ problemId, onUpdate = saveTemplate }: EditCodePanelProps) {
+export default function EditCodePanel({ problemId }: EditCodePanelProps) {
   const [codeTemplate, setCodeTemplate] = useState<Template>({
     language: 'cpp',
     content: `// 默认代码模板 for Problem ${problemId}`,
   });
-
   const [templates, setTemplates] = useState<Template[]>([]);
 
   useEffect(() => {
-    async function fetch() {
+    async function fetchTemplates() {
       try {
         const problem = await getProblemData(problemId);
         setTemplates(problem.templates);
-        const cppTemplate = problem.templates.find(t => t.language === 'cpp');
-        setCodeTemplate(cppTemplate || problem.templates[0]);
+        const sel = problem.templates.find(t => t.language === 'cpp') || problem.templates[0];
+        if (sel) setCodeTemplate(sel);
       } catch (err) {
         console.error('加载问题数据失败:', err);
+        toast.error('加载问题数据失败');
       }
     }
-    fetch();
+    fetchTemplates();
   }, [problemId]);
 
   const handleLanguageChange = (language: string) => {
-    const selected = templates.find(t => t.language === language);
-    if (selected) {
-      setCodeTemplate(selected);
-    }
+    const sel = templates.find(t => t.language === language);
+    if (sel) setCodeTemplate(sel);
   };
 
-  // 事件处理函数返回 Promise<void>，不要返回具体数据
   const handleSave = async (): Promise<void> => {
-    if (!onUpdate) {
-      alert('保存函数未传入，无法保存');
-      return;
-    }
     try {
-      const result = await onUpdate(codeTemplate);
-      if (result.success) {
-        alert('保存成功');
+      const res = await updateProblemTemplate(
+          problemId,
+          codeTemplate.language as Language,
+          codeTemplate.content
+      );
+      if (res.success) {
+        toast.success('保存成功');
       } else {
-        alert('保存失败');
+        toast.error('保存失败');
       }
     } catch (error) {
-      console.error(error);
-      alert('保存异常');
+      console.error('保存异常:', error);
+      toast.error('保存异常');
     }
   };
 
@@ -89,9 +77,9 @@ export default function EditCodePanel({ problemId, onUpdate = saveTemplate }: Ed
                   id="language-select"
                   className="block w-full p-2 border border-gray-300 rounded-md dark:bg-gray-800 dark:border-gray-700"
                   value={codeTemplate.language}
-                  onChange={(e) => handleLanguageChange(e.target.value)}
+                  onChange={e => handleLanguageChange(e.target.value)}
               >
-                {templates.map((t) => (
+                {templates.map(t => (
                     <option key={t.language} value={t.language}>
                       {t.language.toUpperCase()}
                     </option>
@@ -106,7 +94,7 @@ export default function EditCodePanel({ problemId, onUpdate = saveTemplate }: Ed
                     language={codeTemplate.language}
                     value={codeTemplate.content}
                     path={`/${problemId}.${codeTemplate.language}`}
-                    onChange={(value) =>
+                    onChange={value =>
                         setCodeTemplate({ ...codeTemplate, content: value || '' })
                     }
                 />
diff --git a/src/components/creater/edit-description-panel.tsx b/src/components/creater/edit-description-panel.tsx
index 24667e3..c08bbe2 100644
--- a/src/components/creater/edit-description-panel.tsx
+++ b/src/components/creater/edit-description-panel.tsx
@@ -1,6 +1,6 @@
 "use client";
 
-import { useEffect, useState } from "react";
+import React, { useEffect, useState } from "react";
 import { Label } from "@/components/ui/label";
 import { Input } from "@/components/ui/input";
 import { Button } from "@/components/ui/button";
@@ -11,6 +11,9 @@ import { getProblemData } from "@/app/actions/getProblem";
 import { getProblemLocales } from "@/app/actions/getProblemLocales";
 import { Accordion } from "@/components/ui/accordion";
 import { VideoEmbed } from "@/components/content/video-embed";
+import { toast } from "sonner";
+import { updateProblemDescription, updateProblemTitle } from '@/components/creater/problem-maintain';
+import { Locale } from "@/generated/client";
 
 export default function EditDescriptionPanel({ problemId }: { problemId: string }) {
   const [locales, setLocales] = useState<string[]>([]);
@@ -20,33 +23,35 @@ export default function EditDescriptionPanel({ problemId }: { problemId: string
   const [description, setDescription] = useState({ title: "", content: "" });
   const [viewMode, setViewMode] = useState<"edit" | "preview" | "compare">("edit");
 
-  // 获取语言列表
   useEffect(() => {
     async function fetchLocales() {
-      const langs = await getProblemLocales(problemId);
-      setLocales(langs);
-      if (langs.length > 0) {
-        setCurrentLocale(langs[0]);
+      try {
+        const langs = await getProblemLocales(problemId);
+        setLocales(langs);
+        if (langs.length > 0) setCurrentLocale(langs[0]);
+      } catch (err) {
+        console.error(err);
+        toast.error('获取语言列表失败');
       }
     }
     fetchLocales();
   }, [problemId]);
 
-  // 获取对应语言的题目数据
   useEffect(() => {
     if (!currentLocale) return;
     async function fetchProblem() {
-      const data = await getProblemData(problemId, currentLocale);
-      setDescription({
-        title: data?.title || "",
-        content: data?.description || "",
-      });
+      try {
+        const data = await getProblemData(problemId, currentLocale);
+        setDescription({ title: data?.title || "", content: data?.description || "" });
+      } catch (err) {
+        console.error(err);
+        toast.error('加载题目描述失败');
+      }
     }
     fetchProblem();
   }, [problemId, currentLocale]);
 
-  // 添加新语言（仅前端）
-  function handleAddCustomLocale() {
+  const handleAddCustomLocale = () => {
     if (customLocale && !locales.includes(customLocale)) {
       const newLocales = [...locales, customLocale];
       setLocales(newLocales);
@@ -54,7 +59,27 @@ export default function EditDescriptionPanel({ problemId }: { problemId: string
       setCustomLocale("");
       setDescription({ title: "", content: "" });
     }
-  }
+  };
+
+  const handleSave = async (): Promise<void> => {
+    if (!currentLocale) {
+      toast.error('请选择语言');
+      return;
+    }
+    try {
+      const locale = currentLocale as Locale;
+      const resTitle = await updateProblemTitle(problemId, locale, description.title);
+      const resDesc = await updateProblemDescription(problemId, locale, description.content);
+      if (resTitle.success && resDesc.success) {
+        toast.success('保存成功');
+      } else {
+        toast.error('保存失败');
+      }
+    } catch (err) {
+      console.error(err);
+      toast.error('保存异常');
+    }
+  };
 
   return (
       <Card className="w-full">
@@ -141,7 +166,7 @@ export default function EditDescriptionPanel({ problemId }: { problemId: string
             )}
           </div>
 
-          <Button>保存更改</Button>
+          <Button onClick={handleSave}>保存更改</Button>
         </CardContent>
       </Card>
   );
diff --git a/src/components/creater/edit-detail-panel.tsx b/src/components/creater/edit-detail-panel.tsx
index e4c2b72..9749ab1 100644
--- a/src/components/creater/edit-detail-panel.tsx
+++ b/src/components/creater/edit-detail-panel.tsx
@@ -1,19 +1,19 @@
 "use client";
 
-import { useState, useEffect } from "react";
+import React, { useState, useEffect } from "react";
 import { Label } from "@/components/ui/label";
 import { Input } from "@/components/ui/input";
+import { Button } from "@/components/ui/button";
 import { Card, CardContent, CardHeader, CardTitle } from "@/components/ui/card";
 import { getProblemData } from "@/app/actions/getProblem";
+import { toast } from "sonner";
+import { updateProblemDetail } from '@/components/creater/problem-maintain';
+import { Difficulty } from "@/generated/client";
 
-export default function EditDetailPanel({
-                                          problemId,
-                                        }: {
-  problemId: string;
-}) {
+export default function EditDetailPanel({ problemId }: { problemId: string }) {
   const [problemDetails, setProblemDetails] = useState({
     displayId: 1000,
-    difficulty: "EASY" as "EASY" | "MEDIUM" | "HARD",
+    difficulty: "EASY" as Difficulty,
     timeLimit: 1000,
     memoryLimit: 134217728,
     isPublished: false,
@@ -32,6 +32,7 @@ export default function EditDetailPanel({
         });
       } catch (error) {
         console.error("获取题目信息失败:", error);
+        toast.error('加载详情失败');
       }
     }
     fetchData();
@@ -51,9 +52,27 @@ export default function EditDetailPanel({
   };
 
   const handleDifficultyChange = (e: React.ChangeEvent<HTMLSelectElement>) => {
-    const value = e.target.value;
-    if (value === "EASY" || value === "MEDIUM" || value === "HARD") {
-      setProblemDetails({ ...problemDetails, difficulty: value });
+    const value = e.target.value as Difficulty;
+    setProblemDetails({ ...problemDetails, difficulty: value });
+  };
+
+  const handleSave = async () => {
+    try {
+      const res = await updateProblemDetail(problemId, {
+        displayId: problemDetails.displayId,
+        difficulty: problemDetails.difficulty,
+        timeLimit: problemDetails.timeLimit,
+        memoryLimit: problemDetails.memoryLimit,
+        isPublished: problemDetails.isPublished,
+      });
+      if (res.success) {
+        toast.success('保存成功');
+      } else {
+        toast.error('保存失败');
+      }
+    } catch (err) {
+      console.error('保存异常:', err);
+      toast.error('保存异常');
     }
   };
 
@@ -121,15 +140,16 @@ export default function EditDetailPanel({
                   onChange={(e) =>
                       setProblemDetails({ ...problemDetails, isPublished: e.target.checked })
                   }
-                  className="w-4 h-4 text-blue-600 bg-gray-100 border-gray-300 rounded focus:ring-blue-500 dark:focus:ring-blue-600 dark:ring-offset-gray-800 focus:ring-2 dark:bg-gray-700 dark:border-gray-600"
+                  className="w-4 h-4 text-blue-600 bg-gray-100 border-gray-300 rounded focus:ring-blue-500 dark:focus:ring-blue-600 focus:ring-2"
               />
-              <Label
-                  htmlFor="is-published"
-                  className="text-sm font-medium text-gray-700 dark:text-gray-300"
-              >
+              <Label htmlFor="is-published" className="text-sm font-medium">
                 是否发布
               </Label>
             </div>
+
+            <Button type="button" onClick={handleSave}>
+              保存更改
+            </Button>
           </div>
         </CardContent>
       </Card>
diff --git a/src/components/creater/edit-solution-panel.tsx b/src/components/creater/edit-solution-panel.tsx
index 3cc02ea..ba840a1 100644
--- a/src/components/creater/edit-solution-panel.tsx
+++ b/src/components/creater/edit-solution-panel.tsx
@@ -1,6 +1,6 @@
 "use client";
 
-import { useEffect, useState } from "react";
+import React, { useEffect, useState } from "react";
 import { Label } from "@/components/ui/label";
 import { Input } from "@/components/ui/input";
 import { Button } from "@/components/ui/button";
@@ -11,6 +11,9 @@ import { getProblemData } from "@/app/actions/getProblem";
 import { getProblemLocales } from "@/app/actions/getProblemLocales";
 import { Accordion } from "@/components/ui/accordion";
 import { VideoEmbed } from "@/components/content/video-embed";
+import { toast } from "sonner";
+import { updateProblemSolution } from '@/components/creater/problem-maintain';
+import { Locale } from "@/generated/client";
 
 export default function EditSolutionPanel({ problemId }: { problemId: string }) {
   const [locales, setLocales] = useState<string[]>([]);
@@ -22,9 +25,14 @@ export default function EditSolutionPanel({ problemId }: { problemId: string })
 
   useEffect(() => {
     async function fetchLocales() {
-      const langs = await getProblemLocales(problemId);
-      setLocales(langs);
-      if (langs.length > 0) setCurrentLocale(langs[0]);
+      try {
+        const langs = await getProblemLocales(problemId);
+        setLocales(langs);
+        if (langs.length > 0) setCurrentLocale(langs[0]);
+      } catch (err) {
+        console.error(err);
+        toast.error('获取语言列表失败');
+      }
     }
     fetchLocales();
   }, [problemId]);
@@ -32,24 +40,44 @@ export default function EditSolutionPanel({ problemId }: { problemId: string })
   useEffect(() => {
     if (!currentLocale) return;
     async function fetchSolution() {
-      const data = await getProblemData(problemId, currentLocale);
-      setSolution({
-        title: (data?.title || "") + " 解析",
-        content: data?.solution || "",
-      });
+      try {
+        const data = await getProblemData(problemId, currentLocale);
+        setSolution({ title: (data?.title || "") + " 解析", content: data?.solution || "" });
+      } catch (err) {
+        console.error(err);
+        toast.error('加载题目解析失败');
+      }
     }
     fetchSolution();
   }, [problemId, currentLocale]);
 
-  function handleAddCustomLocale() {
+  const handleAddCustomLocale = () => {
     if (customLocale && !locales.includes(customLocale)) {
-      const newLocales = [...locales, customLocale];
-      setLocales(newLocales);
+      setLocales(prev => [...prev, customLocale]);
       setCurrentLocale(customLocale);
       setCustomLocale("");
       setSolution({ title: "", content: "" });
     }
-  }
+  };
+
+  const handleSave = async (): Promise<void> => {
+    if (!currentLocale) {
+      toast.error('请选择语言');
+      return;
+    }
+    try {
+      const locale = currentLocale as Locale;
+      const res = await updateProblemSolution(problemId, locale, solution.content);
+      if (res.success) {
+        toast.success('保存成功');
+      } else {
+        toast.error('保存失败');
+      }
+    } catch (err) {
+      console.error(err);
+      toast.error('保存异常');
+    }
+  };
 
   return (
       <Card className="w-full">
@@ -77,11 +105,11 @@ export default function EditSolutionPanel({ problemId }: { problemId: string })
                   value={customLocale}
                   onChange={(e) => setCustomLocale(e.target.value)}
               />
-              <Button onClick={handleAddCustomLocale}>添加</Button>
+              <Button type="button" onClick={handleAddCustomLocale}>添加</Button>
             </div>
           </div>
 
-          {/* 标题输入 */}
+          {/* 标题输入 (仅展示) */}
           <div className="space-y-2">
             <Label htmlFor="solution-title">题解标题</Label>
             <Input
@@ -89,32 +117,17 @@ export default function EditSolutionPanel({ problemId }: { problemId: string })
                 value={solution.title}
                 onChange={(e) => setSolution({ ...solution, title: e.target.value })}
                 placeholder="输入题解标题"
+                disabled
             />
           </div>
 
           {/* 编辑/预览切换 */}
           <div className="flex space-x-2">
-            <Button
-                type="button"
-                variant={viewMode === "edit" ? "default" : "outline"}
-                onClick={() => setViewMode("edit")}
-            >
-              编辑
-            </Button>
-            <Button
-                type="button"
-                variant={viewMode === "preview" ? "default" : "outline"}
-                onClick={() => setViewMode(viewMode === "preview" ? "edit" : "preview")}
-            >
+            <Button type="button" variant={viewMode === "edit" ? "default" : "outline"} onClick={() => setViewMode("edit")}>编辑</Button>
+            <Button type="button" variant={viewMode === "preview" ? "default" : "outline"} onClick={() => setViewMode(viewMode === "preview" ? "edit" : "preview")}>
               {viewMode === "preview" ? "取消" : "预览"}
             </Button>
-            <Button
-                type="button"
-                variant={viewMode === "compare" ? "default" : "outline"}
-                onClick={() => setViewMode("compare")}
-            >
-              对比
-            </Button>
+            <Button type="button" variant={viewMode === "compare" ? "default" : "outline"} onClick={() => setViewMode("compare")}>对比</Button>
           </div>
 
           {/* 编辑/预览区域 */}
@@ -136,7 +149,7 @@ export default function EditSolutionPanel({ problemId }: { problemId: string })
             )}
           </div>
 
-          <Button>保存更改</Button>
+          <Button type="button" onClick={handleSave}>保存更改</Button>
         </CardContent>
       </Card>
   );
diff --git a/src/components/creater/edit-testcase-panel.tsx b/src/components/creater/edit-testcase-panel.tsx
index 7c83cd5..23275fb 100644
--- a/src/components/creater/edit-testcase-panel.tsx
+++ b/src/components/creater/edit-testcase-panel.tsx
@@ -1,240 +1,208 @@
 "use client";
 
-import {useState, useEffect} from "react";
-import {generateAITestcase} from "@/app/actions/ai-testcase";
-import {Label} from "@/components/ui/label";
-import {Input} from "@/components/ui/input";
-import {Button} from "@/components/ui/button";
-import {Card, CardContent, CardHeader, CardTitle} from "@/components/ui/card";
-import {getProblemData} from "@/app/actions/getProblem";
+import React, { useState, useEffect } from "react";
+import { generateAITestcase } from "@/app/actions/ai-testcase";
+import { getProblemData } from "@/app/actions/getProblem";
+import {
+    addProblemTestcase,
+    updateProblemTestcase,
+    deleteProblemTestcase,
+} from "@/components/creater/problem-maintain";
+import { Label } from "@/components/ui/label";
+import { Input } from "@/components/ui/input";
+import { Button } from "@/components/ui/button";
+import { Card, CardContent, CardHeader, CardTitle } from "@/components/ui/card";
+import { toast } from "sonner";
 
-export default function EditTestcasePanel({
-                                              problemId,
-                                          }: {
-    problemId: string;
-}) {
-    const [testcases, setTestcases] = useState<
-        Array<{
-            id: string;
-            expectedOutput: string;
-            inputs: Array<{
-                name: string;
-                value: string;
-            }>;
-        }>
-    >([]);
-
-    useEffect(() => {
-        async function fetchData() {
-            try {
-                const problemData = await getProblemData(problemId);
-                if (problemData && problemData.testcases) {
-                    setTestcases(problemData.testcases);
-                } else {
-                    setTestcases([]);
-                }
-            } catch (error) {
-                console.error("加载测试用例失败:", error);
-                setTestcases([]);
-            }
-        }
-
-        fetchData();
-    }, [problemId]);
-
-    const handleAddTestcase = () => {
-        setTestcases([
-            ...testcases,
-            {
-                id: `new-${Date.now()}`,
-                expectedOutput: "",
-                inputs: [{name: "input1", value: ""}],
-            },
-        ]);
-    };
+interface Testcase {
+    id: string;
+    expectedOutput: string;
+    inputs: { name: string; value: string }[];
+}
 
+export default function EditTestcasePanel({ problemId }: { problemId: string }) {
+    const [testcases, setTestcases] = useState<Testcase[]>([]);
     const [isGenerating, setIsGenerating] = useState(false);
 
+    // 1) Load existing testcases
+    useEffect(() => {
+        async function fetch() {
+            try {
+                const data = await getProblemData(problemId);
+                setTestcases(data.testcases || []);
+            } catch (err) {
+                console.error("加载测试用例失败:", err);
+                toast.error("加载测试用例失败");
+            }
+        }
+        fetch();
+    }, [problemId]);
+
+    // 2) Local add
+    const handleAddTestcase = () =>
+        setTestcases((prev) => [
+            ...prev,
+            { id: `new-${Date.now()}`, expectedOutput: "", inputs: [{ name: "input1", value: "" }] },
+        ]);
+
+    // 3) AI generation
     const handleAITestcase = async () => {
         setIsGenerating(true);
         try {
-            const AIOutputParsed = await generateAITestcase({problemId: problemId});
-            setTestcases([
-                ...testcases,
-                {
-                    id: `new-${Date.now()}`,
-                    expectedOutput: AIOutputParsed.expectedOutput,
-                    inputs: AIOutputParsed.inputs
-                }
-            ])
-            window.scrollTo({
-                top: document.body.scrollHeight,
-                behavior: 'smooth',
-            });
-        } catch (error) {
-            console.error(error)
+            const ai = await generateAITestcase({ problemId });
+            setTestcases((prev) => [
+                ...prev,
+                { id: `new-${Date.now()}`, expectedOutput: ai.expectedOutput, inputs: ai.inputs },
+            ]);
+            window.scrollTo({ top: document.body.scrollHeight, behavior: "smooth" });
+        } catch (err) {
+            console.error(err);
+            toast.error("AI 生成测试用例失败");
         } finally {
             setIsGenerating(false);
         }
-    }
-
-    const handleRemoveTestcase = (index: number) => {
-        const newTestcases = [...testcases];
-        newTestcases.splice(index, 1);
-        setTestcases(newTestcases);
     };
 
+    // 4) Remove (local + remote if existing)
+    const handleRemoveTestcase = async (idx: number) => {
+        const tc = testcases[idx];
+        if (!tc.id.startsWith("new-")) {
+            try {
+                const res = await deleteProblemTestcase(problemId, tc.id);
+                if (res.success) toast.success("删除测试用例成功");
+                else toast.error("删除测试用例失败");
+            } catch (err) {
+                console.error(err);
+                toast.error("删除测试用例异常");
+            }
+        }
+        setTestcases((prev) => prev.filter((_, i) => i !== idx));
+    };
+
+    // 5) Field updates
+    const handleExpectedOutputChange = (idx: number, val: string) =>
+        setTestcases((prev) => {
+            const c = [...prev];
+            c[idx].expectedOutput = val;
+            return c;
+        });
+
     const handleInputChange = (
-        testcaseIndex: number,
-        inputIndex: number,
+        tIdx: number,
+        iIdx: number,
         field: "name" | "value",
-        value: string
-    ) => {
-        const newTestcases = [...testcases];
-        newTestcases[testcaseIndex].inputs[inputIndex][field] = value;
-        setTestcases(newTestcases);
-    };
-
-    const handleExpectedOutputChange = (testcaseIndex: number, value: string) => {
-        const newTestcases = [...testcases];
-        newTestcases[testcaseIndex].expectedOutput = value;
-        setTestcases(newTestcases);
-    };
-
-    const handleAddInput = (testcaseIndex: number) => {
-        const newTestcases = [...testcases];
-        newTestcases[testcaseIndex].inputs.push({
-            name: `input${newTestcases[testcaseIndex].inputs.length + 1}`,
-            value: "",
+        val: string
+    ) =>
+        setTestcases((prev) => {
+            const c = [...prev];
+            c[tIdx].inputs[iIdx][field] = val;
+            return c;
         });
-        setTestcases(newTestcases);
-    };
 
-    const handleRemoveInput = (testcaseIndex: number, inputIndex: number) => {
-        const newTestcases = [...testcases];
-        newTestcases[testcaseIndex].inputs.splice(inputIndex, 1);
-        setTestcases(newTestcases);
+    const handleAddInput = (tIdx: number) =>
+        setTestcases((prev) => {
+            const c = [...prev];
+            c[tIdx].inputs.push({ name: `input${c[tIdx].inputs.length + 1}`, value: "" });
+            return c;
+        });
+
+    const handleRemoveInput = (tIdx: number, iIdx: number) =>
+        setTestcases((prev) => {
+            const c = [...prev];
+            c[tIdx].inputs.splice(iIdx, 1);
+            return c;
+        });
+
+    // 6) Persist all changes
+    const handleSaveAll = async () => {
+        try {
+            for (const tc of testcases) {
+                if (tc.id.startsWith("new-")) {
+                    const res = await addProblemTestcase(problemId, tc.expectedOutput, tc.inputs);
+                    if (res.success) toast.success("新增测试用例成功");
+                    else toast.error("新增测试用例失败");
+                } else {
+                    const res = await updateProblemTestcase(
+                        problemId,
+                        tc.id,
+                        tc.expectedOutput,
+                        tc.inputs
+                    );
+                    if (res.success) toast.success("更新测试用例成功");
+                    else toast.error("更新测试用例失败");
+                }
+            }
+        } catch (err) {
+            console.error(err);
+            toast.error("保存测试用例异常");
+        }
     };
 
     return (
         <Card className="w-full">
             <CardHeader>
                 <CardTitle>测试用例</CardTitle>
-                <div className="flex items-center space-x-1"> {/* space-x-1 让按钮更接近 */}
-                    <Button type="button" onClick={handleAddTestcase}>
-                        添加测试用例
+                <div className="flex items-center space-x-2">
+                    <Button onClick={handleAddTestcase}>添加测试用例</Button>
+                    <Button onClick={handleAITestcase} disabled={isGenerating}>
+                        {isGenerating ? "生成中..." : "使用AI生成测试用例"}
                     </Button>
-                    <Button
-                        type="button"
-                        className="flex items-center gap-1"
-                        onClick={handleAITestcase}
-                        disabled={isGenerating}
-                        style={{
-                            opacity: isGenerating ? 0.7 : 1,
-                            cursor: isGenerating ? 'not-allowed' : 'pointer'
-                        }}
-                    >
-                        <svg
-                            data-testid="geist-icon"
-                            height="16"
-                            strokeLinejoin="round"
-                            style={{color: isGenerating ? '#888' : "currentColor"}}
-                            viewBox="0 0 16 16"
-                            width="16"
-                        >
-                            <path
-                                d="M2.5 0.5V0H3.5V0.5C3.5 1.60457 4.39543 2.5 5.5 2.5H6V3V3.5H5.5C4.39543 3.5 3.5 4.39543 3.5 5.5V6H3H2.5V5.5C2.5 4.39543 1.60457 3.5 0.5 3.5H0V3V2.5H0.5C1.60457 2.5 2.5 1.60457 2.5 0.5Z"
-                                fill="currentColor"></path>
-                            <path
-                                d="M14.5 4.5V5H13.5V4.5C13.5 3.94772 13.0523 3.5 12.5 3.5H12V3V2.5H12.5C13.0523 2.5 13.5 2.05228 13.5 1.5V1H14H14.5V1.5C14.5 2.05228 14.9477 2.5 15.5 2.5H16V3V3.5H15.5C14.9477 3.5 14.5 3.94772 14.5 4.5Z"
-                                fill="currentColor"></path>
-                            <path
-                                d="M8.40706 4.92939L8.5 4H9.5L9.59294 4.92939C9.82973 7.29734 11.7027 9.17027 14.0706 9.40706L15 9.5V10.5L14.0706 10.5929C11.7027 10.8297 9.82973 12.7027 9.59294 15.0706L9.5 16H8.5L8.40706 15.0706C8.17027 12.7027 6.29734 10.8297 3.92939 10.5929L3 10.5V9.5L3.92939 9.40706C6.29734 9.17027 8.17027 7.29734 8.40706 4.92939Z"
-                                fill="currentColor"></path>
-                        </svg>
-                        {isGenerating ? '生成中...' : '使用AI生成测试用例'}
+                    <Button variant="secondary" onClick={handleSaveAll}>
+                        保存测试用例
                     </Button>
                 </div>
             </CardHeader>
-            <CardContent>
-                <div className="space-y-6">
-                    {testcases.map((testcase, index) => (
-                        <div key={testcase.id} className="border p-4 rounded-md space-y-4">
-                            <div className="flex justify-between items-center">
-                                <h3 className="text-lg font-medium">测试用例 {index + 1}</h3>
-                                <Button
-                                    type="button"
-                                    variant="destructive"
-                                    onClick={() => handleRemoveTestcase(index)}
-                                >
-                                    删除
-                                </Button>
-                            </div>
-
-                            <div className="space-y-2">
-                                <Label htmlFor={`expected-output-${index}`}>预期输出</Label>
-                                <Input
-                                    id={`expected-output-${index}`}
-                                    value={testcase.expectedOutput}
-                                    onChange={(e) => handleExpectedOutputChange(index, e.target.value)}
-                                    placeholder="输入预期输出"
-                                />
-                            </div>
-
-                            <div className="space-y-2">
-                                <div className="flex justify-between items-center">
-                                    <Label>输入参数</Label>
-                                    <Button type="button" onClick={() => handleAddInput(index)}>
-                                        添加输入
-                                    </Button>
-                                </div>
-
-                                {testcase.inputs.map((input, inputIndex) => (
-                                    <div key={input.name} className="grid grid-cols-2 gap-4">
-                                        <div className="space-y-2">
-                                            <Label htmlFor={`input-name-${index}-${inputIndex}`}>
-                                                参数名称
-                                            </Label>
-                                            <Input
-                                                id={`input-name-${index}-${inputIndex}`}
-                                                value={input.name}
-                                                onChange={(e) =>
-                                                    handleInputChange(index, inputIndex, "name", e.target.value)
-                                                }
-                                                placeholder="输入参数名称"
-                                            />
-                                        </div>
-                                        <div className="space-y-2">
-                                            <Label htmlFor={`input-value-${index}-${inputIndex}`}>
-                                                参数值
-                                            </Label>
-                                            <Input
-                                                id={`input-value-${index}-${inputIndex}`}
-                                                value={input.value}
-                                                onChange={(e) =>
-                                                    handleInputChange(index, inputIndex, "value", e.target.value)
-                                                }
-                                                placeholder="输入参数值"
-                                            />
-                                        </div>
-                                        {inputIndex > 0 && (
-                                            <Button
-                                                type="button"
-                                                variant="outline"
-                                                onClick={() => handleRemoveInput(index, inputIndex)}
-                                                className="w-full"
-                                            >
-                                                删除输入
-                                            </Button>
-                                        )}
-                                    </div>
-                                ))}
-                            </div>
+            <CardContent className="space-y-6">
+                {testcases.map((tc, idx) => (
+                    <div key={tc.id} className="border p-4 rounded space-y-4">
+                        <div className="flex justify-between items-center">
+                            <h3 className="font-medium">测试用例 {idx + 1}</h3>
+                            <Button variant="destructive" onClick={() => handleRemoveTestcase(idx)}>
+                                删除
+                            </Button>
                         </div>
-                    ))}
-                </div>
+                        <div className="space-y-2">
+                            <Label>预期输出</Label>
+                            <Input
+                                value={tc.expectedOutput}
+                                onChange={(e) => handleExpectedOutputChange(idx, e.target.value)}
+                                placeholder="输入预期输出"
+                            />
+                        </div>
+                        <div className="space-y-2">
+                            <div className="flex justify-between items-center">
+                                <Label>输入参数</Label>
+                                <Button onClick={() => handleAddInput(idx)}>添加输入</Button>
+                            </div>
+                            {tc.inputs.map((inp, iIdx) => (
+                                <div key={iIdx} className="grid grid-cols-2 gap-4">
+                                    <div>
+                                        <Label>名称</Label>
+                                        <Input
+                                            value={inp.name}
+                                            onChange={(e) => handleInputChange(idx, iIdx, "name", e.target.value)}
+                                            placeholder="参数名称"
+                                        />
+                                    </div>
+                                    <div>
+                                        <Label>值</Label>
+                                        <Input
+                                            value={inp.value}
+                                            onChange={(e) => handleInputChange(idx, iIdx, "value", e.target.value)}
+                                            placeholder="参数值"
+                                        />
+                                    </div>
+                                    {iIdx > 0 && (
+                                        <Button variant="outline" onClick={() => handleRemoveInput(idx, iIdx)}>
+                                            删除输入
+                                        </Button>
+                                    )}
+                                </div>
+                            ))}
+                        </div>
+                    </div>
+                ))}
             </CardContent>
         </Card>
-
     );
 }
diff --git a/src/components/creater/problem-maintain.tsx b/src/components/creater/problem-maintain.tsx
new file mode 100644
index 0000000..0895c5e
--- /dev/null
+++ b/src/components/creater/problem-maintain.tsx
@@ -0,0 +1,230 @@
+"use server";
+
+import prisma from "@/lib/prisma";
+import { revalidatePath } from "next/cache";
+import { Difficulty, Locale, ProblemContentType, Language } from "@/generated/client";
+
+export async function updateProblemDetail(problemId: string, data: { displayId?: number; difficulty?: Difficulty; timeLimit?: number; memoryLimit?: number; isPublished?: boolean }) {
+  try {
+    const updatedProblem = await prisma.problem.update({
+      where: { id: problemId },
+      data: {
+        displayId: data.displayId,
+        difficulty: data.difficulty,
+        timeLimit: data.timeLimit,
+        memoryLimit: data.memoryLimit,
+        isPublished: data.isPublished
+      }
+    });
+
+    revalidatePath(`/problem-editor/${problemId}`);
+    return { success: true, problem: updatedProblem };
+  } catch (error) {
+    console.error("Failed to update problem detail:", error);
+    return { success: false, error: "Failed to update problem detail" };
+  }
+}
+
+export async function updateProblemDescription(problemId: string, locale: Locale, content: string) {
+  try {
+    const updatedLocalization = await prisma.problemLocalization.upsert({
+      where: {
+        problemId_locale_type: {
+          problemId: problemId,
+          locale: locale,
+          type: ProblemContentType.DESCRIPTION
+        }
+      },
+      create: {
+        problemId: problemId,
+        locale: locale,
+        type: ProblemContentType.DESCRIPTION,
+        content: content
+      },
+      update: {
+        content: content
+      }
+    });
+
+    revalidatePath(`/problem-editor/${problemId}`);
+    return { success: true, localization: updatedLocalization };
+  } catch (error) {
+    console.error("Failed to update problem description:", error);
+    return { success: false, error: "Failed to update problem description" };
+  }
+}
+
+export async function updateProblemSolution(problemId: string, locale: Locale, content: string) {
+  try {
+    const updatedLocalization = await prisma.problemLocalization.upsert({
+      where: {
+        problemId_locale_type: {
+          problemId: problemId,
+          locale: locale,
+          type: ProblemContentType.SOLUTION
+        }
+      },
+      create: {
+        problemId: problemId,
+        locale: locale,
+        type: ProblemContentType.SOLUTION,
+        content: content
+      },
+      update: {
+        content: content
+      }
+    });
+
+    revalidatePath(`/problem-editor/${problemId}`);
+    return { success: true, localization: updatedLocalization };
+  } catch (error) {
+    console.error("Failed to update problem solution:", error);
+    return { success: false, error: "Failed to update problem solution" };
+  }
+}
+
+export async function updateProblemTemplate(problemId: string, language: Language, content: string) {
+  try {
+    const updatedTemplate = await prisma.template.upsert({
+      where: {
+        problemId_language: {
+          problemId: problemId,
+          language: language
+        }
+      },
+      create: {
+        problemId: problemId,
+        language: language,
+        content: content
+      },
+      update: {
+        content: content
+      }
+    });
+
+    revalidatePath(`/problem-editor/${problemId}`);
+    return { success: true, template: updatedTemplate };
+  } catch (error) {
+    console.error("Failed to update problem template:", error);
+    return { success: false, error: "Failed to update problem template" };
+  }
+}
+
+export async function updateProblemTestcase(problemId: string, testcaseId: string, expectedOutput: string, inputs: { name: string; value: string }[]) {
+  try {
+    // Update testcase
+    const updatedTestcase = await prisma.testcase.update({
+      where: { id: testcaseId },
+      data: {
+        expectedOutput: expectedOutput
+      }
+    });
+
+    // Delete old inputs
+    await prisma.testcaseInput.deleteMany({
+      where: { testcaseId: testcaseId }
+    });
+
+    // Create new inputs
+    const createdInputs = await prisma.testcaseInput.createMany({
+      data: inputs.map((input, index) => ({
+        testcaseId: testcaseId,
+        index: index,
+        name: input.name,
+        value: input.value
+      }))
+    });
+
+    revalidatePath(`/problem-editor/${problemId}`);
+    return { 
+      success: true, 
+      testcase: updatedTestcase,
+      inputs: createdInputs
+    };
+  } catch (error) {
+    console.error("Failed to update problem testcase:", error);
+    return { success: false, error: "Failed to update problem testcase" };
+  }
+}
+
+export async function addProblemTestcase(problemId: string, expectedOutput: string, inputs: { name: string; value: string }[]) {
+  try {
+    // Create testcase
+    const newTestcase = await prisma.testcase.create({
+      data: {
+        problemId: problemId,
+        expectedOutput: expectedOutput
+      }
+    });
+
+    // Create inputs
+    const createdInputs = await prisma.testcaseInput.createMany({
+      data: inputs.map((input, index) => ({
+        testcaseId: newTestcase.id,
+        index: index,
+        name: input.name,
+        value: input.value
+      }))
+    });
+
+    revalidatePath(`/problem-editor/${problemId}`);
+    return { 
+      success: true, 
+      testcase: newTestcase,
+      inputs: createdInputs
+    };
+  } catch (error) {
+    console.error("Failed to add problem testcase:", error);
+    return { success: false, error: "Failed to add problem testcase" };
+  }
+}
+
+export async function deleteProblemTestcase(problemId: string, testcaseId: string) {
+  try {
+    const deletedTestcase = await prisma.testcase.delete({
+      where: { id: testcaseId }
+    });
+
+    revalidatePath(`/problem-editor/${problemId}`);
+    return { success: true, testcase: deletedTestcase };
+  } catch (error) {
+    console.error("Failed to delete problem testcase:", error);
+    return { success: false, error: "Failed to delete problem testcase" };
+  }
+}
+
+/**
+ * 更新题目标题（TITLE）
+ */
+export async function updateProblemTitle(
+    problemId: string,
+    locale: Locale,
+    title: string
+) {
+  try {
+    const updated = await prisma.problemLocalization.upsert({
+      where: {
+        problemId_locale_type: {
+          problemId,
+          locale,
+          type: ProblemContentType.TITLE,
+        },
+      },
+      create: {
+        problemId,
+        locale,
+        type: ProblemContentType.TITLE,
+        content: title,
+      },
+      update: {
+        content: title,
+      },
+    });
+    // 重新缓存编辑页
+    revalidatePath(`/problem-editor/${problemId}`);
+    return { success: true, localization: updated };
+  } catch (error) {
+    console.error("更新题目标题失败：", error);
+    return { success: false, error: "更新题目标题失败" };
+  }
+}
\ No newline at end of file