diff --git a/HealthMonitor.WebApi/Worker.cs b/HealthMonitor.WebApi/Worker.cs
index 9e997f5..3f32d03 100644
--- a/HealthMonitor.WebApi/Worker.cs
+++ b/HealthMonitor.WebApi/Worker.cs
@@ -1039,7 +1039,7 @@ namespace HealthMonitor.WebApi
                                                     _logger.LogInformation($"{imeiDel} 胎动统计周期:{statStartTime.ToString("yyyy-MM-dd HH:mm:ss")}-{statEndTime.ToString("yyyy-MM-dd HH:mm:ss")}");
 
 
-                                                    var fetalMovementSampleTime = DateTimeUtil.ConvertToTimeStamp(statEndTime).ToString()[..10];
+                                                    var fetalMovementSampleTime = DateTimeUtil.ConvertToTimeStamp(statStartTime).ToString()[..10];
                                                     var isFetalMovementExisted = await _deviceCacheMgr.FetalMovementIsExistedAsync(imeiDel, fetalMovementSampleTime);
 
                                                     if (!isFetalMovementExisted)