diff --git a/IRaCIS.Core.Application/Service/Reading/ReadingImageTask/ReadingImageTaskService.cs b/IRaCIS.Core.Application/Service/Reading/ReadingImageTask/ReadingImageTaskService.cs
index 3ebd840cc..dd1ec03fa 100644
--- a/IRaCIS.Core.Application/Service/Reading/ReadingImageTask/ReadingImageTaskService.cs
+++ b/IRaCIS.Core.Application/Service/Reading/ReadingImageTask/ReadingImageTaskService.cs
@@ -529,11 +529,26 @@ namespace IRaCIS.Application.Services
                 }).ToListAsync();
 
 
-            if (taskInfo.TrialReadingCriterion.IsReadingTaskViewInOrder != ReadingOrder.InOrder)
-            {
-                result = result.Where(x => x.VisitTaskId == inDto.VisitTaskId).ToList();
-            }
 
+            switch (taskInfo.TrialReadingCriterion.IsReadingTaskViewInOrder)
+            {
+                case ReadingOrder.InOrder:
+                    /// 有序不做处理
+                    break;
+                case ReadingOrder.Random:
+                    result = result.Where(x => x.VisitTaskId == inDto.VisitTaskId).ToList();
+                    break;
+                case ReadingOrder.SubjectRandom:
+                    // 受试者随机 当前任务为第一个 其他的 随机
+                    var self = result.Where(x => x.VisitTaskId == inDto.VisitTaskId).FirstOrDefault();
+                    Random random = new Random();
+                    var otherList = result.Where(x => x.VisitTaskId != inDto.VisitTaskId).OrderBy(x => random.Next()).ToList();
+                    var newList = new List<GetRelatedVisitTaskOutDto>() { self };
+                    newList.AddRange(otherList);
+                    result = newList;
+                    break;
+
+            }
 
             var visitaskIds = result.Select(x => x.VisitTaskId).ToList();