diff --git a/src/config.py b/src/config.py
index f6cdf37..e37e9aa 100644
--- a/src/config.py
+++ b/src/config.py
@@ -12,8 +12,8 @@ class Config:
     SIMULATION_MODE = True
 
     # Trading hours
-    MARKET_OPEN_TIME = os.environ.get("MARKET_OPEN_TIME", "09:15")
-    MARKET_CLOSE_TIME = os.environ.get("MARKET_CLOSE_TIME", "15:30")
+    MARKET_OPEN_TIME = os.environ.get("MARKET_OPEN_TIME", "09:20")
+    MARKET_CLOSE_TIME = os.environ.get("MARKET_CLOSE_TIME", "15:10")
 
     # Logging
     LOG_DIR = "logs"
@@ -38,18 +38,3 @@ class Config:
     # 计划任务运行时间
     STRATEGY_SAVE_TIME = "15:10"  # 每天保存策略数据的时间
     CLEAN_ORDERS_TIME = "15:05"  # 每天清理超时委托的时间
-
-    @staticmethod
-    def is_market_open():
-        """判断当前是否在交易时间内
-        
-        Returns:
-            bool: 是否在交易时间内
-        """
-        now = datetime.datetime.now().time()
-        morning_start = datetime.time(9, 30)
-        morning_end = datetime.time(11, 30)
-        afternoon_start = datetime.time(13, 0)
-        afternoon_end = datetime.time(15, 0)
-        
-        return (morning_start <= now <= morning_end) or (afternoon_start <= now <= afternoon_end)