diff --git a/frontend/mining-app/lib/presentation/providers/trading_providers.dart b/frontend/mining-app/lib/presentation/providers/trading_providers.dart
index ea6991e7..f3635be6 100644
--- a/frontend/mining-app/lib/presentation/providers/trading_providers.dart
+++ b/frontend/mining-app/lib/presentation/providers/trading_providers.dart
@@ -8,6 +8,7 @@ import '../../domain/entities/kline.dart';
 import '../../domain/repositories/trading_repository.dart';
 import '../../data/models/trade_order_model.dart';
 import '../../core/di/injection.dart';
+import 'user_providers.dart';
 
 // Repository Provider
 final tradingRepositoryProvider = Provider<TradingRepository>((ref) {
@@ -32,7 +33,11 @@ final buyEnabledProvider = FutureProvider<bool>((ref) async {
 });
 
 // 预种卖出限制状态 Provider (2分钟缓存，fail-open)
+// 依赖当前用户 accountSequence，账号切换时自动重新请求，避免跨账号缓存污染
 final sellRestrictionProvider = FutureProvider<bool>((ref) async {
+  // 绑定用户身份：accountSequence 变化（登录/切换账号）时自动失效重新请求
+  ref.watch(userNotifierProvider.select((s) => s.accountSequence));
+
   final repository = ref.watch(tradingRepositoryProvider);
   final result = await repository.getSellRestriction();