diff --git a/IRaCIS.Core.Application/Service/ImageAndDoc/DownloadAndUploadService.cs b/IRaCIS.Core.Application/Service/ImageAndDoc/DownloadAndUploadService.cs
index 7be3b0487..7e185716c 100644
--- a/IRaCIS.Core.Application/Service/ImageAndDoc/DownloadAndUploadService.cs
+++ b/IRaCIS.Core.Application/Service/ImageAndDoc/DownloadAndUploadService.cs
@@ -471,7 +471,7 @@ namespace IRaCIS.Core.Application.Service.ImageAndDoc
                     }
 
 
-                    study.Id = IdentifierHelper.CreateGuid(incommand.Study.StudyInstanceUid, incommand.TrialId.ToString(), visiTaskId.ToString());
+                    study.Id = studyId;
                     study.TrialId = incommand.TrialId;
                     study.SubjectId = incommand.SubjectId;
                     study.VisitTaskId = visiTaskId;
@@ -568,29 +568,41 @@ namespace IRaCIS.Core.Application.Service.ImageAndDoc
                             //新的序列 那么  检查的序列数量+1
                             findStudy.SeriesCount += 1;
                         }
-                        else
-                        {
-                            //该序列掉了instance
-                            dicomSeries.InstanceCount += seriesItem.InstanceList.Count;
-                        }
+                        //else
+                        //{
+                        //    //该序列掉了instance
+                        //    dicomSeries.InstanceCount += seriesItem.InstanceList.Count;
+                        //}
+
+                        //找到该序列已经存在的instanceId
+                        var existInstanceIdList = _taskInstanceRepository.Where(t => t.SeriesId == dicomSeries.Id).Select(t => t.Id).ToList();
 
                         foreach (var instanceItem in seriesItem.InstanceList)
                         {
                             var insntance = _mapper.Map<TaskInstance>(instanceItem);
-                            insntance.Id = IdentifierHelper.CreateGuid(insntance.StudyInstanceUid, insntance.SeriesInstanceUid, insntance.SopInstanceUid, trialId.ToString(), visiTaskId.ToString());
-                            insntance.StudyId = findStudy.Id;
-                            insntance.SeriesId = dicomSeries.Id;
 
-                            insntance.TrialId = incommand.TrialId;
-                            insntance.SubjectId = incommand.SubjectId;
-                            insntance.VisitTaskId = visiTaskId;
+                            var instanceId = IdentifierHelper.CreateGuid(insntance.StudyInstanceUid, insntance.SeriesInstanceUid, insntance.SopInstanceUid, trialId.ToString(), visiTaskId.ToString());
+
+
+                            if (!existInstanceIdList.Any(t => t == instanceId))
+                            {
+                                insntance.Id = instanceId;
+                                insntance.StudyId = findStudy.Id;
+                                insntance.SeriesId = dicomSeries.Id;
+
+                                insntance.TrialId = incommand.TrialId;
+                                insntance.SubjectId = incommand.SubjectId;
+                                insntance.VisitTaskId = visiTaskId;
+
+                                await _taskInstanceRepository.AddAsync(insntance);
+
+                                dicomSeries.InstanceCount++;
+                                findStudy.InstanceCount++;
+                            }
 
-                            await _taskInstanceRepository.AddAsync(insntance);
                         }
-
-
                         //  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
-                        findStudy.InstanceCount += seriesItem.InstanceList.Count;
+                        //findStudy.InstanceCount += seriesItem.InstanceList.Count;
 
                     }