diff --git a/backend/app/services/bitget_live_trading_service.py b/backend/app/services/bitget_live_trading_service.py
index 6764135..51aab24 100644
--- a/backend/app/services/bitget_live_trading_service.py
+++ b/backend/app/services/bitget_live_trading_service.py
@@ -95,7 +95,10 @@ class BitgetLiveTradingService:
             }
         """
         balance = self.trading_api.get_balance()
-        logger.debug(f"[Bitget] get_balance 原始返回: {balance}")
+        if not balance:
+            logger.warning("[Bitget] get_balance() 返回空，API 调用可能失败")
+        else:
+            logger.debug(f"[Bitget] get_balance 原始返回: {balance}")
 
         usdt = balance.get('USDT') or balance.get('usdt') or {}
         if not usdt: