diff --git a/lib/commands/generate_command.dart b/lib/commands/generate_command.dart
index d63ded6..ce5a48f 100644
--- a/lib/commands/generate_command.dart
+++ b/lib/commands/generate_command.dart
@@ -1,3 +1,7 @@
+import 'dart:io';
+
+import 'package:path/path.dart' as path;
+
 import '../core/models.dart';
 import '../generators/documentation_generator.dart';
 import '../generators/endpoint_code_generator.dart';
@@ -220,6 +224,17 @@ class GenerateCommand extends BaseCommand {
         }
       }
 
+      // 重新生成 index.dart 文件，包含所有生成的文件
+      if (options.generateModels || options.generateApi) {
+        progress('正在重新生成 index.dart 文件...');
+        final modelsDir = '$fullOutputDir/api_models';
+        final allFiles = await _getAllModelFiles(modelsDir);
+        final indexContent = _generateUpdatedIndexFile(allFiles);
+        final indexPath = '$modelsDir/index.dart';
+        await FileUtils.writeFile(indexPath, indexContent);
+        success('index.dart 文件已更新');
+      }
+
       // 生成文档
       if (options.generateDocs) {
         progress('正在生成API文档...');
@@ -268,6 +283,58 @@ class GenerateCommand extends BaseCommand {
     );
   }
 
+  /// 获取所有模型文件列表
+  Future<List<String>> _getAllModelFiles(String modelsDir) async {
+    try {
+      final directory = Directory(modelsDir);
+      if (!await directory.exists()) {
+        return [];
+      }
+
+      final files = await directory.list().toList();
+      final dartFiles = <String>[];
+
+      for (final entity in files) {
+        if (entity is File && entity.path.endsWith('.dart')) {
+          final fileName = path.basename(entity.path);
+          // 排除 index.dart 本身和 .g.dart 文件
+          if (fileName != 'index.dart' && !fileName.endsWith('.g.dart')) {
+            dartFiles.add(fileName);
+          }
+        }
+      }
+
+      // 按文件名排序
+      dartFiles.sort();
+      return dartFiles;
+    } catch (e) {
+      print('获取模型文件列表失败: $e');
+      return [];
+    }
+  }
+
+  /// 生成更新的 index.dart 文件内容
+  String _generateUpdatedIndexFile(List<String> fileNames) {
+    final buffer = StringBuffer();
+
+    // 生成文件头
+    buffer.writeln('// API 模型导出文件');
+    buffer.writeln('// 基于 Swagger API 文档: ');
+    buffer.writeln('// 自动生成于: ${DateTime.now().toString().substring(0, 10)} ');
+    buffer.writeln('// 由 xy_swagger_generator by max 生成');
+    buffer.writeln('// Copyright (C) 2025 YuanXuan. All rights reserved.');
+    buffer.writeln('');
+    buffer.writeln('library;');
+    buffer.writeln('');
+
+    // 导出所有文件
+    for (final fileName in fileNames) {
+      buffer.writeln('export \'$fileName\';');
+    }
+
+    return buffer.toString();
+  }
+
   /// 生成摘要信息
   void _generateSummary(SwaggerDocument document, String outputDir) {
     final summary = StringBuffer();
diff --git a/lib/generators/model_code_generator.dart b/lib/generators/model_code_generator.dart
index 5a24a32..634ed81 100644
--- a/lib/generators/model_code_generator.dart
+++ b/lib/generators/model_code_generator.dart
@@ -226,7 +226,7 @@ class ModelCodeGenerator extends ModelGenerator {
       buffer.writeln(StringUtils.generateComment(model.description));
     }
 
-    buffer.writeln('@JsonSerializable()');
+    buffer.writeln('@JsonSerializable(checked: true)');
     buffer.writeln('class $className {');
 
     // 生成属性
@@ -571,7 +571,7 @@ class ModelCodeGenerator extends ModelGenerator {
       buffer.writeln(StringUtils.generateComment(model.description));
     }
 
-    buffer.writeln('@JsonSerializable()');
+    buffer.writeln('@JsonSerializable(checked: true)');
     buffer.writeln('class $className {');
 
     // 生成属性
diff --git a/lib/generators/retrofit_api_generator.dart b/lib/generators/retrofit_api_generator.dart
index 007f1fd..8953a64 100644
--- a/lib/generators/retrofit_api_generator.dart
+++ b/lib/generators/retrofit_api_generator.dart
@@ -1340,7 +1340,7 @@ class RetrofitApiGenerator extends BaseGenerator {
       buffer.writeln('');
 
       // 生成参数实体类
-      buffer.writeln('@JsonSerializable()');
+      buffer.writeln('@JsonSerializable(checked: true)');
       buffer.writeln('class $className {');
 
       // 生成属性
diff --git a/lib/utils/string_utils.dart b/lib/utils/string_utils.dart
index ec1acc5..082e24f 100644
--- a/lib/utils/string_utils.dart
+++ b/lib/utils/string_utils.dart
@@ -344,10 +344,11 @@ class StringUtils {
 
   /// 生成文件头注释
   static String generateFileHeader(String description, String source) {
-    final timestamp = DateTime.now().toIso8601String();
+    final timestamp = DateTime.now().toLocal().toString().split(" ").first;
     return '''// $description
 // 基于 Swagger API 文档: 
-// 自动生成于: $timestamp by Max
+// 自动生成于: $timestamp 
+// 由 xy_swagger_generator by max 生成
 // Copyright (C) 2025 YuanXuan. All rights reserved.
 ''';
   }