diff --git a/IRaCIS.Core.Application/Service/ImageAndDoc/DownloadAndUploadService.cs b/IRaCIS.Core.Application/Service/ImageAndDoc/DownloadAndUploadService.cs
index e92668e13..ac0217c6a 100644
--- a/IRaCIS.Core.Application/Service/ImageAndDoc/DownloadAndUploadService.cs
+++ b/IRaCIS.Core.Application/Service/ImageAndDoc/DownloadAndUploadService.cs
@@ -708,9 +708,12 @@ namespace IRaCIS.Core.Application.Service.ImageAndDoc
 
                         TaskSeries dicomSeries = await _taskSeriesRepository.FirstOrDefaultAsync(t => t.Id == seriesId);
 
+                        var isNewSeries = false;
                         //判断重复
                         if (dicomSeries == null)
                         {
+                            isNewSeries = true;
+
                             var series = _mapper.Map<TaskSeries>(seriesItem);
 
                             series.Id = seriesId;
@@ -755,7 +758,10 @@ namespace IRaCIS.Core.Application.Service.ImageAndDoc
 
                                 await _taskInstanceRepository.AddAsync(insntance);
 
-                                dicomSeries.InstanceCount++;
+                                if (isNewSeries == false)
+                                {
+                                    dicomSeries.InstanceCount++;
+                                }
                                 findStudy.InstanceCount++;
                             }