diff --git a/IRaCIS.Core.Application/Service/ImageAndDoc/StudyService.cs b/IRaCIS.Core.Application/Service/ImageAndDoc/StudyService.cs
index 2d37728a0..ad5b16994 100644
--- a/IRaCIS.Core.Application/Service/ImageAndDoc/StudyService.cs
+++ b/IRaCIS.Core.Application/Service/ImageAndDoc/StudyService.cs
@@ -276,7 +276,7 @@ namespace IRaCIS.Core.Application.Service.ImageAndDoc
                         else
                         {
                             //该序列掉了instance
-                            dicomSeries.InstanceCount += seriesItem.InstanceCount;
+                            dicomSeries.InstanceCount += seriesItem.InstanceList.Count;
                         }
 
                         dicomSeries.IamgeResizePath = seriesItem.IamgeResizePath;
@@ -298,7 +298,7 @@ namespace IRaCIS.Core.Application.Service.ImageAndDoc
 
 
                         //  不管是新的序列  还是 该序列 掉了Instance   重传的时候 检查的instance 数量都会增加
-                        study.InstanceCount += seriesItem.InstanceCount;
+                        study.InstanceCount += seriesItem.InstanceList.Count;
 
                     }