diff --git a/frontend/mobile-app/lib/core/di/injection_container.dart b/frontend/mobile-app/lib/core/di/injection_container.dart
index a4644345..7837ffdd 100644
--- a/frontend/mobile-app/lib/core/di/injection_container.dart
+++ b/frontend/mobile-app/lib/core/di/injection_container.dart
@@ -32,22 +32,13 @@ final apiClientProvider = Provider<ApiClient>((ref) {
   return ApiClient(secureStorage: secureStorage);
 });
 
-// Account Service Provider
-final accountServiceProvider = Provider<AccountService>((ref) {
-  final apiClient = ref.watch(apiClientProvider);
-  final secureStorage = ref.watch(secureStorageProvider);
-  return AccountService(
-    apiClient: apiClient,
-    secureStorage: secureStorage,
-  );
-});
-
 // Telemetry Storage Provider
 final telemetryStorageProvider = Provider<TelemetryStorage>((ref) {
   return TelemetryStorage();
 });
 
 // Multi Account Service Provider
+// 注意：必须在 AccountService 之前定义，因为 AccountService 依赖它
 final multiAccountServiceProvider = Provider<MultiAccountService>((ref) {
   final secureStorage = ref.watch(secureStorageProvider);
   final localStorage = ref.watch(localStorageProvider);
@@ -55,6 +46,18 @@ final multiAccountServiceProvider = Provider<MultiAccountService>((ref) {
   return MultiAccountService(secureStorage, localStorage, telemetryStorage);
 });
 
+// Account Service Provider
+final accountServiceProvider = Provider<AccountService>((ref) {
+  final apiClient = ref.watch(apiClientProvider);
+  final secureStorage = ref.watch(secureStorageProvider);
+  final multiAccountService = ref.watch(multiAccountServiceProvider);
+  return AccountService(
+    apiClient: apiClient,
+    secureStorage: secureStorage,
+    multiAccountService: multiAccountService,
+  );
+});
+
 // Referral Service Provider
 final referralServiceProvider = Provider<ReferralService>((ref) {
   final apiClient = ref.watch(apiClientProvider);
diff --git a/frontend/mobile-app/lib/core/services/account_service.dart b/frontend/mobile-app/lib/core/services/account_service.dart
index e0c681d1..caae8919 100644
--- a/frontend/mobile-app/lib/core/services/account_service.dart
+++ b/frontend/mobile-app/lib/core/services/account_service.dart
@@ -10,6 +10,7 @@ import '../storage/storage_keys.dart';
 import '../errors/exceptions.dart';
 import '../telemetry/telemetry_service.dart';
 import '../sentry/sentry_service.dart';
+import 'multi_account_service.dart';
 
 /// 设备硬件信息 (存储在 deviceName 字段中)
 class DeviceHardwareInfo {
@@ -335,14 +336,17 @@ class WalletAddressInfo {
 class AccountService {
   final ApiClient _apiClient;
   final SecureStorage _secureStorage;
+  final MultiAccountService? _multiAccountService;
 
   static const String _tag = '[AccountService]';
 
   AccountService({
     required ApiClient apiClient,
     required SecureStorage secureStorage,
+    MultiAccountService? multiAccountService,
   })  : _apiClient = apiClient,
-        _secureStorage = secureStorage {
+        _secureStorage = secureStorage,
+        _multiAccountService = multiAccountService {
     debugPrint('$_tag 初始化完成');
   }
 
@@ -889,10 +893,45 @@ class AccountService {
 
   /// 更新本地存储的头像 SVG
   /// 当从 API 获取到头像后，同步保存到本地存储
+  /// 同时更新账号列表中的头像信息
   Future<void> updateLocalAvatarSvg(String avatarSvg) async {
     debugPrint('$_tag updateLocalAvatarSvg() - 更新本地头像 SVG (长度: ${avatarSvg.length})');
     await _secureStorage.write(key: StorageKeys.avatarSvg, value: avatarSvg);
     debugPrint('$_tag updateLocalAvatarSvg() - 保存成功');
+
+    // 同步到账号列表
+    await _syncAvatarToAccountList(avatarSvg: avatarSvg);
+  }
+
+  /// 同步头像信息到账号列表
+  Future<void> _syncAvatarToAccountList({String? avatarSvg, String? avatarUrl}) async {
+    await _syncProfileToAccountList(avatarSvg: avatarSvg, avatarUrl: avatarUrl);
+  }
+
+  /// 同步用户资料到账号列表
+  Future<void> _syncProfileToAccountList({
+    String? username,
+    String? avatarSvg,
+    String? avatarUrl,
+  }) async {
+    if (_multiAccountService == null) {
+      debugPrint('$_tag _syncProfileToAccountList() - MultiAccountService 未注入，跳过同步');
+      return;
+    }
+
+    final userSerialNum = await _secureStorage.read(key: StorageKeys.userSerialNum);
+    if (userSerialNum == null) {
+      debugPrint('$_tag _syncProfileToAccountList() - 未找到用户序列号，跳过同步');
+      return;
+    }
+
+    await _multiAccountService.updateAccountInList(
+      userSerialNum: userSerialNum,
+      username: username,
+      avatarSvg: avatarSvg,
+      avatarUrl: avatarUrl,
+    );
+    debugPrint('$_tag _syncProfileToAccountList() - 已同步资料到账号列表');
   }
 
   /// 获取推荐码
@@ -1180,6 +1219,11 @@ class AccountService {
         await _secureStorage.write(key: StorageKeys.avatarSvg, value: avatarUrl);
       }
 
+      // 同步到账号列表
+      if (nickname != null || avatarUrl != null) {
+        await _syncProfileToAccountList(username: nickname, avatarSvg: avatarUrl);
+      }
+
       debugPrint('$_tag updateProfile() - 用户资料更新完成');
     } on ApiException catch (e) {
       debugPrint('$_tag updateProfile() - API 异常: $e');
@@ -1263,6 +1307,9 @@ class AccountService {
       await _secureStorage.write(key: StorageKeys.avatarUrl, value: newAvatarUrl);
       debugPrint('$_tag uploadAvatar() - 本地存储已更新');
 
+      // 同步到账号列表
+      await _syncProfileToAccountList(avatarUrl: newAvatarUrl);
+
       // 将图片复制到本地缓存目录
       try {
         final localPath = await _saveAvatarToLocal(imageFile);
diff --git a/frontend/mobile-app/lib/core/services/multi_account_service.dart b/frontend/mobile-app/lib/core/services/multi_account_service.dart
index 80564edd..66f3c432 100644
--- a/frontend/mobile-app/lib/core/services/multi_account_service.dart
+++ b/frontend/mobile-app/lib/core/services/multi_account_service.dart
@@ -147,6 +147,39 @@ class MultiAccountService {
     await _saveAccountList(accounts);
   }
 
+  /// 更新账号列表中的账号信息（如头像变更时调用）
+  /// 仅更新指定字段，保留其他字段不变
+  Future<void> updateAccountInList({
+    required String userSerialNum,
+    String? username,
+    String? avatarSvg,
+    String? avatarUrl,
+  }) async {
+    debugPrint('$_tag updateAccountInList() - 更新账号: $userSerialNum');
+    final accounts = await getAccountList();
+
+    final existingIndex = accounts.indexWhere(
+      (a) => a.userSerialNum == userSerialNum,
+    );
+
+    if (existingIndex < 0) {
+      debugPrint('$_tag updateAccountInList() - 账号不存在');
+      return;
+    }
+
+    final existing = accounts[existingIndex];
+    accounts[existingIndex] = AccountSummary(
+      userSerialNum: existing.userSerialNum,
+      username: username ?? existing.username,
+      avatarSvg: avatarSvg ?? existing.avatarSvg,
+      avatarUrl: avatarUrl ?? existing.avatarUrl,
+      createdAt: existing.createdAt,
+    );
+
+    await _saveAccountList(accounts);
+    debugPrint('$_tag updateAccountInList() - 更新成功');
+  }
+
   /// 从列表中移除账号
   Future<void> removeAccount(String userSerialNum) async {
     debugPrint('$_tag removeAccount() - 移除账号: $userSerialNum');