diff --git a/HealthMonitor.WebApi/Worker.cs b/HealthMonitor.WebApi/Worker.cs
index 4d21d4e..c48a4ba 100644
--- a/HealthMonitor.WebApi/Worker.cs
+++ b/HealthMonitor.WebApi/Worker.cs
@@ -223,7 +223,7 @@ namespace HealthMonitor.WebApi
                                 systolicRefValue = lastPush!.SystolicRefValue;
                                 diastolicRefValue = lastPush!.DiastolicRefValue;
 
-                                condition = $"ts between '{startTime:yyyy-MM-dd HH:mm:ss.fff}' and '{lastPush?.Timestamp:yyyy-MM-dd HH:mm:ss.fff}' " +
+                                condition = $"ts between '{lastPush?.Timestamp:yyyy-MM-dd HH:mm:ss.fff}' and '{startTime:yyyy-MM-dd HH:mm:ss.fff}' " +
                                 $"and serialno='{imeiDel}' " +
                                 $"and is_display = true";
                                 var hmBpResponse = await _serviceTDengine.ExecuteSelectRestResponseAsync("stb_hm_bloodpress", condition);