diff --git a/IRaCIS.Core.Application/Service/Reading/ReadingQuestionService.cs b/IRaCIS.Core.Application/Service/Reading/ReadingQuestionService.cs
index 132b7a5c..a5336fa1 100644
--- a/IRaCIS.Core.Application/Service/Reading/ReadingQuestionService.cs
+++ b/IRaCIS.Core.Application/Service/Reading/ReadingQuestionService.cs
@@ -291,7 +291,7 @@ namespace IRaCIS.Application.Services
         /// <param name="newParentId"></param>
         /// <param name="systemQuesitonList"></param>
         /// <param name="needQuestionList"></param>
-        public  void CreateQuestionRelation(Guid ReadingQuestionCriterionTrialId, Guid trialId,Guid oldParentId,Guid newParentId, List<ReadingQuestionSystem> systemQuesitonList, List<ReadingQuestionTrial> needQuestionList)
+        private void CreateQuestionRelation(Guid ReadingQuestionCriterionTrialId, Guid trialId,Guid oldParentId,Guid newParentId, List<ReadingQuestionSystem> systemQuesitonList, List<ReadingQuestionTrial> needQuestionList)
         {
             var childList = systemQuesitonList.Where(x => x.ParentId == oldParentId).ToList();
             childList.ForEach(x =>