diff --git a/influxdb_api.py b/influxdb_api.py
index 553e0e0..0227a07 100644
--- a/influxdb_api.py
+++ b/influxdb_api.py
@@ -1353,7 +1353,7 @@ def query_all_record_by_date(query_date: str, bucket: str="realtime_simulation_r
     query_api = client.query_api()
     # 将 start_date 的北京时间转换为 UTC 时间
     utc_time = time_api.to_utc_time(query_date + "T00:00:00+08:00")
-    start_time = time_api.get_utc_beginning(utc_time).isoformat()
+    start_time = time_api.get_utc_beginning(utc_time)
     print(start_time)
     stop_time = time_api.get_utc_after(start_time, hours=1)
     print(stop_time)