diff --git a/frontend/mobile-app/lib/features/deposit/presentation/pages/deposit_usdt_page.dart b/frontend/mobile-app/lib/features/deposit/presentation/pages/deposit_usdt_page.dart
index 9822fe5f..cc05ce30 100644
--- a/frontend/mobile-app/lib/features/deposit/presentation/pages/deposit_usdt_page.dart
+++ b/frontend/mobile-app/lib/features/deposit/presentation/pages/deposit_usdt_page.dart
@@ -77,19 +77,14 @@ class _DepositUsdtPageState extends ConsumerState<DepositUsdtPage> {
       _bscAddress = addressResponse.bscAddress;
       _dstAddress = addressResponse.dstAddress;
 
-      // 查询实时余额
+      // 从 wallet-service 查询钱包余额
       try {
-        final balanceResponse = await depositService.getUsdtBalances();
-        // 根据当前选中的网络显示余额
+        final walletService = ref.read(walletServiceProvider);
+        final walletResponse = await walletService.getMyWallet();
+        // 显示 USDT 可用余额
         if (mounted) {
           setState(() {
-            if (_selectedNetwork == NetworkType.kava && balanceResponse.kava != null) {
-              _balance = balanceResponse.kava!.balance;
-            } else if (_selectedNetwork == NetworkType.bsc && balanceResponse.bsc != null) {
-              _balance = balanceResponse.bsc!.balance;
-            } else {
-              _balance = '0.00';
-            }
+            _balance = walletResponse.balances.usdt.available.toStringAsFixed(2);
             _isLoading = false;
           });
         }
diff --git a/frontend/mobile-app/lib/features/planting/presentation/pages/planting_quantity_page.dart b/frontend/mobile-app/lib/features/planting/presentation/pages/planting_quantity_page.dart
index 5ade4978..0bc9811c 100644
--- a/frontend/mobile-app/lib/features/planting/presentation/pages/planting_quantity_page.dart
+++ b/frontend/mobile-app/lib/features/planting/presentation/pages/planting_quantity_page.dart
@@ -96,18 +96,12 @@ class _PlantingQuantityPageState extends ConsumerState<PlantingQuantityPage> {
     });
 
     try {
-      // 从 API 获取用户 USDT 余额
-      final depositService = ref.read(depositServiceProvider);
-      final balanceResponse = await depositService.getUsdtBalances();
+      // 从 wallet-service 获取用户钱包余额
+      final walletService = ref.read(walletServiceProvider);
+      final walletResponse = await walletService.getMyWallet();
 
-      // 合并 KAVA 和 BSC 链的余额
-      double totalBalance = 0.0;
-      if (balanceResponse.kava != null) {
-        totalBalance += double.tryParse(balanceResponse.kava!.balance) ?? 0.0;
-      }
-      if (balanceResponse.bsc != null) {
-        totalBalance += double.tryParse(balanceResponse.bsc!.balance) ?? 0.0;
-      }
+      // 使用钱包中的 USDT 可用余额
+      final totalBalance = walletResponse.balances.usdt.available;
 
       // 计算最大可认种数量并自动填入
       final maxQty = (totalBalance / _pricePerTree).floor();