diff --git a/Service/Ammeter/EmeterEnergyService.cs b/Service/Ammeter/EmeterEnergyService.cs
index 09bdeaa..0236ad4 100644
--- a/Service/Ammeter/EmeterEnergyService.cs
+++ b/Service/Ammeter/EmeterEnergyService.cs
@@ -206,7 +206,7 @@ ORDER BY
         DateTime endDateTime = DateTime.Parse(endTime);
     
         // 根据传入的时间参数计算7天前的时间
-        DateTime startDateTime = endDateTime.AddDays(-7);
+        DateTime startDateTime = endDateTime.AddMinutes(-1);
 
         // 根据code分组,取最新时间的一条数据,数据范围7天
         string sql = @"