diff --git a/HealthMonitor.Service/Resolver/PregnancyHeartRateResolver.cs b/HealthMonitor.Service/Resolver/PregnancyHeartRateResolver.cs
index efd218f..746894d 100644
--- a/HealthMonitor.Service/Resolver/PregnancyHeartRateResolver.cs
+++ b/HealthMonitor.Service/Resolver/PregnancyHeartRateResolver.cs
@@ -90,7 +90,7 @@ namespace HealthMonitor.Service.Resolver
                 if (phr.Count >= 30)
                 {
                     // 获取最近的两个记录，并计算它们的 LastUpdate 时间差
-                    var firstTwoPhr = phr.OrderByDescending(i => i.Timestamp).Take(2).Select(i => i.LastUpdate).ToList();
+                    var firstTwoPhr = phr.OrderByDescending(i => i.LastUpdate).Take(2).Select(i => i.LastUpdate).ToList();
                     var timeDiff = firstTwoPhr[0] - firstTwoPhr[1];
 
                     // 如果需要，将时间差转换为秒
@@ -113,10 +113,12 @@ namespace HealthMonitor.Service.Resolver
                     // 高频心率启动
                     if (timeDiffInSeconds<=highFreqSampleInterval)
                     {
-                        /// 设置高频状态
+                       
                         var phrFreqstatus =await _deviceCacheMgr.GetPregnancyHeartRateFreqStatusAsync(heartRate.Serialno);
                         if (phrFreqstatus == null)
                         {
+                            /// 设置高频状态
+                            _logger.LogInformation($"进入高频心率启动状态 timeDiffInSeconds {timeDiffInSeconds},highFreqSampleInterval:{highFreqSampleInterval}");
                             // 设置高频状态
                             var freqFirstPhr= phr.OrderByDescending(i => i.Timestamp).First();
                             await _deviceCacheMgr.SetPregnancyHeartRateFreqStatusAsync(heartRate.Serialno, freqFirstPhr);
@@ -132,11 +134,9 @@ namespace HealthMonitor.Service.Resolver
                         if (lastPhr.All(i => i.PregnancyHeartRate >= triggerHighFreqLow && i.PregnancyHeartRate <= triggerHighFreqHigh))
                         {
                             var avgPhr = lastPhr.Select(i => i.PregnancyHeartRate).Average();
-
                             // 计算一般心率得到胎心系数
                             await SaveAndPushFetalHeartRateAsync(heartRate, upperAlarmThreshold, lowerAlarmThreshold, avgPhr);
 
-
                         }
                         #endregion
                     }
@@ -189,6 +189,9 @@ namespace HealthMonitor.Service.Resolver
 
                             // 删除高频状态的首条记录
                             await _deviceCacheMgr.DelPregnancyHeartRateFreqStatusAsync(heartRate.Serialno);
+
+                            /// 设置高频状态
+                            _logger.LogInformation($"结束高频心率状态 timeDiffInSeconds {timeDiffInSeconds},highFreqSampleInterval:{highFreqSampleInterval}");
                         }
                     }
                 }