diff --git a/IRaCIS.Core.Application/Service/Reading/ReadingCriterion/ReadingQuestionService.cs b/IRaCIS.Core.Application/Service/Reading/ReadingCriterion/ReadingQuestionService.cs
index 69ffea91d..e416e4a53 100644
--- a/IRaCIS.Core.Application/Service/Reading/ReadingCriterion/ReadingQuestionService.cs
+++ b/IRaCIS.Core.Application/Service/Reading/ReadingCriterion/ReadingQuestionService.cs
@@ -847,7 +847,7 @@ namespace IRaCIS.Core.Application.Service
 
 
         /// <summary>
-        /// 新增修改想想项目表格问题
+        /// 新增修改项目表格问题
         /// </summary>
         /// <param name="indto"></param>
         /// <returns></returns>
@@ -861,6 +861,13 @@ namespace IRaCIS.Core.Application.Service
                 //---问题编号重复
                 throw new BusinessValidationFailedException(_localizer["ReadingQuestion_IdDup"]);
             }
+            if (indto.IsPreinstall)
+            {
+                if (await _readingTableQuestionTrialRepository.AnyAsync(x => x.ReadingQuestionId == indto.ReadingQuestionId && x.Id != indto.Id && x.IsPreinstall))
+                {
+                    throw new BusinessValidationFailedException(_localizer["ReadingQuestion_OnlyOnePreinstall"]);
+                }
+            }
 
             indto.ParentTriggerValue = string.Join(',', indto.ParentTriggerValueList);
             indto.RelevanceValue = string.Join(',', indto.RelevanceValueList);