diff --git a/HealthMonitor.Service/Biz/db/TDengineService.cs b/HealthMonitor.Service/Biz/db/TDengineService.cs
index de434d0..bdae874 100644
--- a/HealthMonitor.Service/Biz/db/TDengineService.cs
+++ b/HealthMonitor.Service/Biz/db/TDengineService.cs
@@ -906,7 +906,7 @@ namespace HealthMonitor.Service.Biz.db
             #endregion
 
             // 计算需要的数量
-            int requiredCount = (int)(res.Count * 0.8);
+            int requiredCount = (int)(res.Count * 0.9);
 
             // 从原始数据集中获取最接近众数的元素
             var closestToModeData = res.OrderBy(n => Math.Abs(n - mode))