diff --git a/DOAN.Service/MES/bigScreen/QualityBigScreenService.cs b/DOAN.Service/MES/bigScreen/QualityBigScreenService.cs
index 67595a4..ce91d5b 100644
--- a/DOAN.Service/MES/bigScreen/QualityBigScreenService.cs
+++ b/DOAN.Service/MES/bigScreen/QualityBigScreenService.cs
@@ -207,7 +207,7 @@ namespace DOAN.Service.MES.bigScreen
             var monthLast = GetLastDayOfMonth(DateTime.Today);
 
             // 创建一个数组来存储31天的日期
-            var dates = new DateTime[31];
+            var dates = new DateTime[(monthLast-monthFirst).Days];
 
             // 填充数组
             int i = 0;
@@ -268,7 +268,7 @@ namespace DOAN.Service.MES.bigScreen
             var monthLast = GetLastDayOfMonth(DateTime.Today);
 
             // 创建一个数组来存储31天的日期
-            var dates = new DateTime[31];
+            var dates = new DateTime[(monthLast-monthFirst).Days];
 
             // 填充数组
             int i = 0;
@@ -334,7 +334,7 @@ namespace DOAN.Service.MES.bigScreen
             var monthLast = GetLastDayOfMonth(DateTime.Today);
 
             // 创建一个数组来存储31天的日期
-            var dates = new DateTime[31];
+            var dates = new DateTime[(monthLast-monthFirst).Days];
 
             // 填充数组
             int i = 0;