diff --git a/backend/app/services/real_trading_service.py b/backend/app/services/real_trading_service.py
index 118b850..15320c6 100644
--- a/backend/app/services/real_trading_service.py
+++ b/backend/app/services/real_trading_service.py
@@ -59,24 +59,32 @@ class RealTradingService:
         from sqlalchemy import text
         Base.metadata.create_all(bind=db_service.engine)
 
-        # 创建自动交易开关表
+        # 创建自动交易开关表（使用简单的文本检查而不是 ORM）
         db = db_service.get_session()
         try:
-            db.execute(text("""
-                CREATE TABLE IF NOT EXISTS real_trading_settings (
-                    key TEXT PRIMARY KEY,
-                    value TEXT NOT NULL,
-                    updated_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP
-                )
-            """))
-            db.commit()
+            # 检查表是否存在
+            result = db.execute(text("""
+                SELECT name FROM sqlite_master WHERE type='table' AND name='real_trading_settings'
+            """)).fetchone()
 
-            # 初始化自动交易开关
-            db.execute(text("""
-                INSERT OR IGNORE INTO real_trading_settings (key, value)
-                VALUES ('auto_trading_enabled', '0')
-            """))
-            db.commit()
+            if not result:
+                # 表不存在，创建表
+                db.execute(text("""
+                    CREATE TABLE real_trading_settings (
+                        key TEXT PRIMARY KEY,
+                        value TEXT NOT NULL,
+                        updated_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP
+                    )
+                """))
+                db.commit()
+
+                # 初始化自动交易开关
+                db.execute(text("""
+                    INSERT INTO real_trading_settings (key, value)
+                    VALUES ('auto_trading_enabled', '0')
+                """))
+                db.commit()
+                logger.info("创建实盘交易设置表")
         except Exception as e:
             logger.warning(f"创建设置表失败: {e}")
             db.rollback()