diff --git a/influxdb_api.py b/influxdb_api.py
index 76753ba..5cfda4b 100644
--- a/influxdb_api.py
+++ b/influxdb_api.py
@@ -1344,6 +1344,7 @@ def query_all_record_by_date(query_date: str, bucket: str="realtime_simulation_r
     :param client: 已初始化的InfluxDBClient 实例。
     :return: dict: tuple: (node_records, link_records)
     """
+
     if client.ping():
         print("{} -- Successfully connected to InfluxDB.".format(
             datetime.now().strftime('%Y-%m-%d %H:%M:%S')))
@@ -1351,10 +1352,12 @@ def query_all_record_by_date(query_date: str, bucket: str="realtime_simulation_r
         print("{} -- Failed to connect to InfluxDB.".format(
             datetime.now().strftime('%Y-%m-%d %H:%M:%S')))
     query_api = client.query_api()
+    # 将 start_date 的北京时间转换为 UTC 时间
+    start_time = (datetime.strptime(query_date, "%Y-%m-%d") - timedelta(days=1)).replace(hour=16, minute=0, second=0, tzinfo=timezone.utc).isoformat()
     # 构建 Flux 查询语句
     flux_query = f'''
     from(bucket: "{bucket}")
-      |> range(start: 2025-01-01T00:00:00Z)
+      |> range(start: {start_time})
       |> filter(fn: (r) => r["_measurement"] == "node" or r["_measurement"] == "link")
       |> filter(fn: (r) => r["date"] == "{query_date}")
       |> pivot(
@@ -1363,6 +1366,7 @@ def query_all_record_by_date(query_date: str, bucket: str="realtime_simulation_r
           valueColumn:"_value"
       )           
     '''
+    
     # 执行查询
     tables = query_api.query(flux_query)
     node_records = []