diff --git a/market_data_main.py b/market_data_main.py
index 1eade2d..3341a06 100644
--- a/market_data_main.py
+++ b/market_data_main.py
@@ -121,8 +121,16 @@ class MarketDataMain:
                 if end_time_ts - start_time_ts > 86400000 * 15:
                     start_time_ts = end_time_ts - 86400000 * 15
                     start = timestamp_to_datetime(start_time_ts)
+            elif isinstance(start, int):
+                if end_time_ts - start > 86400000 * 15:
+                    start_time_ts = end_time_ts - 86400000 * 15
+                    start = start_time_ts
+                else:
+                    start_time_ts = start
+                    start = timestamp_to_datetime(start_time_ts)
             else:
-                start_time_ts = transform_date_time_to_timestamp(start)
+                logger.error(f"开始时间格式错误: {start}")
+                return None
         else:
             start_time_ts = transform_date_time_to_timestamp(start)
         if start_time_ts is None: