diff --git a/public/_locales/zh_CN/messages.json b/public/_locales/zh_CN/messages.json
index 845a150..9717b5d 100644
--- a/public/_locales/zh_CN/messages.json
+++ b/public/_locales/zh_CN/messages.json
@@ -1260,5 +1260,45 @@
   "testDataGenerator_saveAs": {
     "message": "另存为",
     "description": "Translation key: testDataGenerator_saveAs"
+  },
+  "testDataGenerator_noGeneratorParams": {
+    "message": "此生成器无可配置参数",
+    "description": "Translation key: testDataGenerator_noGeneratorParams"
+  },
+  "testDataGenerator_enabled": {
+    "message": "启用",
+    "description": "Translation key: testDataGenerator_enabled"
+  },
+  "testDataGenerator_disabled": {
+    "message": "禁用",
+    "description": "Translation key: testDataGenerator_disabled"
+  },
+  "testDataGenerator_commaSeparated": {
+    "message": "用逗号分隔多个值",
+    "description": "Translation key: testDataGenerator_commaSeparated"
+  },
+  "testDataGenerator_copySuccess": {
+    "message": "已复制到剪贴板",
+    "description": "Translation key: testDataGenerator_copySuccess"
+  },
+  "testDataGenerator_copyFailed": {
+    "message": "复制失败",
+    "description": "Translation key: testDataGenerator_copyFailed"
+  },
+  "testDataGenerator_fieldNameEmpty": {
+    "message": "字段名称不能为空",
+    "description": "Translation key: testDataGenerator_fieldNameEmpty"
+  },
+  "testDataGenerator_fieldNameDuplicate": {
+    "message": "字段名称已存在",
+    "description": "Translation key: testDataGenerator_fieldNameDuplicate"
+  },
+  "testDataGenerator_fieldNameInvalid": {
+    "message": "字段名称只能包含字母、数字和下划线",
+    "description": "Translation key: testDataGenerator_fieldNameInvalid"
+  },
+  "testDataGenerator_ruleCopySuffix": {
+    "message": "（副本）",
+    "description": "Translation key: testDataGenerator_ruleCopySuffix"
   }
 }
diff --git a/src/config/__tests__/features.test.ts b/src/config/__tests__/features.test.ts
index ea1feda..6ac2402 100644
--- a/src/config/__tests__/features.test.ts
+++ b/src/config/__tests__/features.test.ts
@@ -9,8 +9,8 @@ import {
 
 describe('features', () => {
   describe('FEATURES', () => {
-    it('should have 9 features defined', () => {
-      expect(FEATURES).toHaveLength(9);
+    it('should have 10 features defined', () => {
+      expect(FEATURES).toHaveLength(10);
     });
 
     it('should have all required properties for each feature', () => {
@@ -95,7 +95,7 @@ describe('features', () => {
   describe('getAllFeatureKeys', () => {
     it('should return all feature keys', () => {
       const allKeys = getAllFeatureKeys();
-      expect(allKeys).toHaveLength(9);
+      expect(allKeys).toHaveLength(10);
       expect(allKeys).toContain('dashboard');
       expect(allKeys).toContain('timestamp');
       expect(allKeys).toContain('storageCleaner');
@@ -105,6 +105,7 @@ describe('features', () => {
       expect(allKeys).toContain('jsonDiff');
       expect(allKeys).toContain('base64Converter');
       expect(allKeys).toContain('rightClickRestorer');
+      expect(allKeys).toContain('testDataGenerator');
     });
   });
 
@@ -121,9 +122,9 @@ describe('features', () => {
       expect(pageOrder).toContain('qrCode');
     });
 
-    it('should have 8 items in page order', () => {
+    it('should have 9 items in page order', () => {
       const pageOrder = getDefaultPageOrder();
-      expect(pageOrder).toHaveLength(8);
+      expect(pageOrder).toHaveLength(9);
     });
   });
 });
diff --git a/src/pages/TestDataGenerator/components/ExportPanel.tsx b/src/pages/TestDataGenerator/components/ExportPanel.tsx
index e80efee..f16a1cc 100644
--- a/src/pages/TestDataGenerator/components/ExportPanel.tsx
+++ b/src/pages/TestDataGenerator/components/ExportPanel.tsx
@@ -4,6 +4,7 @@
  */
 
 import { Copy, Download } from 'lucide-react';
+import { toast } from 'sonner';
 import { Button } from '@/components/ui/button';
 import { useI18n } from '@/utils/chromeI18n';
 import { DataExporter } from '@/utils/dataExporter';
@@ -22,12 +23,22 @@ export default function ExportPanel({ result }: ExportPanelProps) {
 
   const handleCopyJSON = async () => {
     const content = DataExporter.toJSON(result.data!);
-    await DataExporter.copyToClipboard(content);
+    const success = await DataExporter.copyToClipboard(content);
+    if (success) {
+      toast.success(t('testDataGenerator_copySuccess'));
+    } else {
+      toast.error(t('testDataGenerator_copyFailed'));
+    }
   };
 
   const handleCopyCSV = async () => {
     const content = DataExporter.toCSV(result.data!);
-    await DataExporter.copyToClipboard(content);
+    const success = await DataExporter.copyToClipboard(content);
+    if (success) {
+      toast.success(t('testDataGenerator_copySuccess'));
+    } else {
+      toast.error(t('testDataGenerator_copyFailed'));
+    }
   };
 
   const handleDownloadJSON = () => {
diff --git a/src/pages/TestDataGenerator/components/FieldEditor.tsx b/src/pages/TestDataGenerator/components/FieldEditor.tsx
index 4241354..3a5d740 100644
--- a/src/pages/TestDataGenerator/components/FieldEditor.tsx
+++ b/src/pages/TestDataGenerator/components/FieldEditor.tsx
@@ -3,6 +3,7 @@
  * 编辑单个字段的详细配置
  */
 
+import { useState, useCallback } from 'react';
 import { useI18n } from '@/utils/chromeI18n';
 import { Input } from '@/components/ui/input';
 import { Switch } from '@/components/ui/switch';
@@ -15,14 +16,40 @@ import GeneratorConfig from './GeneratorConfig';
 interface FieldEditorProps {
   field: FieldConfig;
   onChange: (field: FieldConfig) => void;
+  /** 所有字段名列表，用于检测重复 */
+  allFieldNames?: string[];
 }
 
-export default function FieldEditor({ field, onChange }: FieldEditorProps) {
+export default function FieldEditor({ field, onChange, allFieldNames = [] }: FieldEditorProps) {
   const { t } = useI18n('testDataGenerator');
   const generator = getGeneratorById(field.generatorId);
+  const [nameError, setNameError] = useState<string | null>(null);
+
+  const validateFieldName = useCallback(
+    (name: string): string | null => {
+      const trimmed = name.trim();
+      if (!trimmed) {
+        return t('testDataGenerator_fieldNameEmpty');
+      }
+      if (!/^[a-zA-Z_][a-zA-Z0-9_]*$/.test(trimmed)) {
+        return t('testDataGenerator_fieldNameInvalid');
+      }
+      const isDuplicate = allFieldNames.some(
+        (n, i) => n === trimmed && i !== allFieldNames.indexOf(field.name),
+      );
+      if (isDuplicate) {
+        return t('testDataGenerator_fieldNameDuplicate');
+      }
+      return null;
+    },
+    [allFieldNames, field.name, t],
+  );
 
   const handleNameChange = (name: string) => {
     onChange({ ...field, name });
+    // 实时校验
+    const error = validateFieldName(name);
+    setNameError(error);
   };
 
   const handleDescriptionChange = (description: string) => {
@@ -93,8 +120,9 @@ export default function FieldEditor({ field, onChange }: FieldEditorProps) {
             onChange={(e) => handleNameChange(e.target.value)}
             placeholder={t('testDataGenerator_fieldNamePlaceholder')}
             maxLength={20}
-            className="h-9"
+            className={`h-9 ${nameError ? 'border-destructive' : ''}`}
           />
+          {nameError && <p className="text-xs text-destructive mt-1">{nameError}</p>}
         </div>
 
         <div className="space-y-2">
diff --git a/src/pages/TestDataGenerator/components/GeneratorConfig.tsx b/src/pages/TestDataGenerator/components/GeneratorConfig.tsx
index 770b124..f8e3392 100644
--- a/src/pages/TestDataGenerator/components/GeneratorConfig.tsx
+++ b/src/pages/TestDataGenerator/components/GeneratorConfig.tsx
@@ -12,6 +12,7 @@ import {
   SelectTrigger,
   SelectValue,
 } from '@/components/ui/select';
+import { useI18n } from '@/utils/chromeI18n';
 import type { GeneratorDefinition } from '@/types/testDataGenerator';
 
 interface GeneratorConfigProps {
@@ -21,12 +22,17 @@ interface GeneratorConfigProps {
 }
 
 export default function GeneratorConfig({ generator, params, onChange }: GeneratorConfigProps) {
+  const { t } = useI18n('testDataGenerator');
   const handleParamChange = (key: string, value: unknown) => {
     onChange({ ...params, [key]: value });
   };
 
   if (generator.params.length === 0) {
-    return <p className="text-sm text-muted-foreground py-2">此生成器无可配置参数</p>;
+    return (
+      <p className="text-sm text-muted-foreground py-2">
+        {t('testDataGenerator_noGeneratorParams')}
+      </p>
+    );
   }
 
   return (
@@ -64,7 +70,9 @@ export default function GeneratorConfig({ generator, params, onChange }: Generat
           {param.type === 'boolean' && (
             <div className="flex items-center justify-between">
               <span className="text-sm text-muted-foreground">
-                {params[param.key] !== false ? '启用' : '禁用'}
+                {params[param.key] !== false
+                  ? t('testDataGenerator_enabled')
+                  : t('testDataGenerator_disabled')}
               </span>
               <Switch
                 checked={params[param.key] !== false}
@@ -107,7 +115,7 @@ export default function GeneratorConfig({ generator, params, onChange }: Generat
                     .filter(Boolean),
                 )
               }
-              placeholder="用逗号分隔多个值"
+              placeholder={t('testDataGenerator_commaSeparated')}
               className="h-9"
             />
           )}
diff --git a/src/pages/TestDataGenerator/components/RuleManager.tsx b/src/pages/TestDataGenerator/components/RuleManager.tsx
index c59cf9e..6bd1d3b 100644
--- a/src/pages/TestDataGenerator/components/RuleManager.tsx
+++ b/src/pages/TestDataGenerator/components/RuleManager.tsx
@@ -80,7 +80,7 @@ export default function RuleManager({ onLoad, onEdit, onRulesChanged }: RuleMana
 
   const handleDuplicate = useCallback(
     (id: string) => {
-      const result = ruleStorage.duplicate(id);
+      const result = ruleStorage.duplicate(id, t('testDataGenerator_ruleCopySuffix'));
       if (result) {
         loadRules();
         toast.success(t('testDataGenerator_ruleDuplicated'));
diff --git a/src/pages/TestDataGenerator/components/__tests__/RuleManager.test.tsx b/src/pages/TestDataGenerator/components/__tests__/RuleManager.test.tsx
index 9811e4c..51e8cca 100644
--- a/src/pages/TestDataGenerator/components/__tests__/RuleManager.test.tsx
+++ b/src/pages/TestDataGenerator/components/__tests__/RuleManager.test.tsx
@@ -100,7 +100,6 @@ describe('RuleManager', () => {
     const deleteButton = screen.getByTitle('删除');
     await user.click(deleteButton);
 
-    expect(screen.getByText('确认删除规则')).toBeInTheDocument();
     expect(screen.getByText(/确定要删除规则/)).toBeInTheDocument();
   });
 
@@ -133,7 +132,7 @@ describe('RuleManager', () => {
 
     await user.click(screen.getByTitle('复制'));
 
-    expect(mockedRuleStorage.duplicate).toHaveBeenCalledWith('rule-1');
+    expect(mockedRuleStorage.duplicate).toHaveBeenCalledWith('rule-1', '（副本）');
     expect(mockedToast.success).toHaveBeenCalled();
   });
 
diff --git a/src/pages/TestDataGenerator/hooks/useGenerator.ts b/src/pages/TestDataGenerator/hooks/useGenerator.ts
index a89eecd..7d38bd5 100644
--- a/src/pages/TestDataGenerator/hooks/useGenerator.ts
+++ b/src/pages/TestDataGenerator/hooks/useGenerator.ts
@@ -51,7 +51,7 @@ export function useGenerator(): UseGeneratorReturn {
    */
   const getWorker = useCallback((): Worker => {
     if (workerRef.current) {
-      workerRef.current.terminate();
+      return workerRef.current;
     }
 
     const worker = new Worker(new URL('@/workers/generator.worker.ts', import.meta.url), {
@@ -82,8 +82,11 @@ export function useGenerator(): UseGeneratorReturn {
     worker.onerror = (err) => {
       console.error('[useGenerator] Worker 错误:', err);
       setIsGenerating(false);
-      setError('Worker 运行错误');
+      setError(err.message || 'Worker 运行错误');
       setProgress(null);
+      // Worker 出错后销毁，下次重新创建
+      workerRef.current?.terminate();
+      workerRef.current = null;
     };
 
     workerRef.current = worker;
diff --git a/src/pages/TestDataGenerator/index.tsx b/src/pages/TestDataGenerator/index.tsx
index d42b910..d6a985f 100644
--- a/src/pages/TestDataGenerator/index.tsx
+++ b/src/pages/TestDataGenerator/index.tsx
@@ -60,64 +60,58 @@ export default function TestDataGeneratorPage() {
 
   // 添加新字段
   const handleAddField = useCallback(() => {
-    if (fields.length >= MAX_FIELDS) return;
-    const newField: FieldConfig = {
-      id: generateId(),
-      name: `field${fields.length + 1}`,
-      generatorId: 'chineseName',
-      params: {},
-      required: true,
-      nullRate: 0,
-      unique: false,
-    };
-    setFields([...fields, newField]);
-    setSelectedIndex(fields.length);
-  }, [fields]);
+    setFields((prev) => {
+      if (prev.length >= MAX_FIELDS) return prev;
+      const newField: FieldConfig = {
+        id: generateId(),
+        name: `field${prev.length + 1}`,
+        generatorId: 'chineseName',
+        params: {},
+        required: true,
+        nullRate: 0,
+        unique: false,
+      };
+      setSelectedIndex(prev.length);
+      return [...prev, newField];
+    });
+  }, []);
 
   // 更新字段
-  const handleUpdateField = useCallback(
-    (index: number, field: FieldConfig) => {
-      const newFields = [...fields];
+  const handleUpdateField = useCallback((index: number, field: FieldConfig) => {
+    setFields((prev) => {
+      const newFields = [...prev];
       newFields[index] = field;
-      setFields(newFields);
-    },
-    [fields],
-  );
+      return newFields;
+    });
+  }, []);
 
   // 删除字段
-  const handleRemoveField = useCallback(
-    (index: number) => {
-      const newFields = fields.filter((_, i) => i !== index);
-      setFields(newFields);
-      if (selectedIndex === index) {
-        setSelectedIndex(null);
-      } else if (selectedIndex !== null && selectedIndex > index) {
-        setSelectedIndex(selectedIndex - 1);
-      }
-    },
-    [fields, selectedIndex],
-  );
+  const handleRemoveField = useCallback((index: number) => {
+    setFields((prev) => prev.filter((_, i) => i !== index));
+    setSelectedIndex((prev) => {
+      if (prev === index) return null;
+      if (prev !== null && prev > index) return prev - 1;
+      return prev;
+    });
+  }, []);
 
   // 拖拽排序
-  const handleReorder = useCallback(
-    (oldIndex: number, newIndex: number) => {
-      const newFields = [...fields];
+  const handleReorder = useCallback((oldIndex: number, newIndex: number) => {
+    setFields((prev) => {
+      const newFields = [...prev];
       const [moved] = newFields.splice(oldIndex, 1);
       newFields.splice(newIndex, 0, moved);
-      setFields(newFields);
-      // 同步更新选中索引
-      if (selectedIndex === oldIndex) {
-        setSelectedIndex(newIndex);
-      } else if (selectedIndex !== null) {
-        if (oldIndex < selectedIndex && newIndex >= selectedIndex) {
-          setSelectedIndex(selectedIndex - 1);
-        } else if (oldIndex > selectedIndex && newIndex <= selectedIndex) {
-          setSelectedIndex(selectedIndex + 1);
-        }
+      return newFields;
+    });
+    setSelectedIndex((prev) => {
+      if (prev === oldIndex) return newIndex;
+      if (prev !== null) {
+        if (oldIndex < prev && newIndex >= prev) return prev - 1;
+        if (oldIndex > prev && newIndex <= prev) return prev + 1;
       }
-    },
-    [fields, selectedIndex],
-  );
+      return prev;
+    });
+  }, []);
 
   // 加载规则
   const handleLoadRule = useCallback(
@@ -293,6 +287,7 @@ export default function TestDataGeneratorPage() {
               <FieldEditor
                 field={selectedField}
                 onChange={(updatedField) => handleUpdateField(selectedIndex, updatedField)}
+                allFieldNames={fields.map((f) => f.name)}
               />
             )}
           </div>
diff --git a/src/utils/ruleStorage.ts b/src/utils/ruleStorage.ts
index fb4ed61..8253abf 100644
--- a/src/utils/ruleStorage.ts
+++ b/src/utils/ruleStorage.ts
@@ -138,8 +138,10 @@ export function deleteRule(id: string): boolean {
 
 /**
  * 复制规则
+ * @param id 规则 ID
+ * @param copySuffix 复制后缀，默认为中文「（副本）」，可通过 i18n 传入
  */
-export function duplicate(id: string): DataRule | null {
+export function duplicate(id: string, copySuffix = '（副本）'): DataRule | null {
   const rule = getById(id);
   if (!rule) {
     console.warn('[ruleStorage] 规则不存在:', id);
@@ -155,7 +157,7 @@ export function duplicate(id: string): DataRule | null {
   const newRule: DataRule = {
     ...rule,
     id: generateId(),
-    name: `${rule.name}（副本）`,
+    name: `${rule.name}${copySuffix}`,
     createdAt: now,
     updatedAt: now,
     useCount: 0,