diff --git a/YD_AllHeartRates.Api/Mqtt/MqttBackgroundService.cs b/YD_AllHeartRates.Api/Mqtt/MqttBackgroundService.cs
index b188efe..b341f8d 100644
--- a/YD_AllHeartRates.Api/Mqtt/MqttBackgroundService.cs
+++ b/YD_AllHeartRates.Api/Mqtt/MqttBackgroundService.cs
@@ -398,7 +398,7 @@ namespace YD_AllHeartRates.Api.Mqtt
                     var exist = await dbContext.JumpRopeData
                         .FirstOrDefaultAsync(x => x.StudentNo == data.StudentNo && x.ScoreTime.Date == today);
 
-                    if (exist != null && exist.JumpValue > 0)
+                    if (exist != null && data.JumpValue > exist.JumpValue)
                     {
                         exist.JumpValue = data.JumpValue;
                         exist.ErrorNumber = data.ErrorNumber;