diff --git a/IRaCIS.Core.Application/Service/Reading/Dto/ReadingClinicalDataDto.cs b/IRaCIS.Core.Application/Service/Reading/Dto/ReadingClinicalDataDto.cs
index bc8d29c2..0d38eb1e 100644
--- a/IRaCIS.Core.Application/Service/Reading/Dto/ReadingClinicalDataDto.cs
+++ b/IRaCIS.Core.Application/Service/Reading/Dto/ReadingClinicalDataDto.cs
@@ -300,7 +300,7 @@ namespace IRaCIS.Core.Application.Service.Reading.Dto
 		/// <summary>
 		/// 是否是访视
 		/// </summary>
-		public bool? IsVisit { get; set; }
+		public bool IsVisit { get; set; }
 
 	}
 
diff --git a/IRaCIS.Core.Application/Service/Reading/ReadingClinicalDataService.cs b/IRaCIS.Core.Application/Service/Reading/ReadingClinicalDataService.cs
index 07653227..66e8235f 100644
--- a/IRaCIS.Core.Application/Service/Reading/ReadingClinicalDataService.cs
+++ b/IRaCIS.Core.Application/Service/Reading/ReadingClinicalDataService.cs
@@ -149,8 +149,8 @@ namespace IRaCIS.Application.Services
             var usedIdsQuery = _readingClinicalDataRepository.Where(x => x.ReadingId == inDto.ReadingId && x.Id != inDto.ReadingClinicalDataId).Select(x => x.ClinicalDataTrialSetId);
             List<GetTrialClinicalDataSelectOutDto> clinicalList = await _clinicalDataTrialSetRepository.Where(x=>x.TrialId==inDto.TrialId&&x.IsConfirm&&x.ClinicalDataSetName!= "既往局部治疗史")
                .Where(x=> !usedIdsQuery.Contains(x.Id))
-                .WhereIf(inDto.IsVisit.Value,x=>x.ClinicalDataLevel == ClinicalLevel.Subject||x.ClinicalDataLevel== ClinicalLevel.SubjectVisit)
-                .WhereIf(!inDto.IsVisit.Value, x => x.ClinicalDataLevel == ClinicalLevel.Subject || x.ClinicalDataLevel == ClinicalLevel.Read)
+                .WhereIf(inDto.IsVisit,x=>x.ClinicalDataLevel == ClinicalLevel.Subject||x.ClinicalDataLevel== ClinicalLevel.SubjectVisit)
+                .WhereIf(inDto.IsVisit, x => x.ClinicalDataLevel == ClinicalLevel.Subject || x.ClinicalDataLevel == ClinicalLevel.Read)
 
                 .Select(x => new GetTrialClinicalDataSelectOutDto()
             {