diff --git a/IRaCIS.Core.Application/Service/ReadingCalculate/PCWG3CalculateService.cs b/IRaCIS.Core.Application/Service/ReadingCalculate/PCWG3CalculateService.cs
index 13aaf92d1..2d1800819 100644
--- a/IRaCIS.Core.Application/Service/ReadingCalculate/PCWG3CalculateService.cs
+++ b/IRaCIS.Core.Application/Service/ReadingCalculate/PCWG3CalculateService.cs
@@ -933,7 +933,7 @@ namespace IRaCIS.Core.Application.Service.ReadingCalculate
                         needAddList.Add(new ReadingTaskQuestionAnswer()
                         {
                             Answer = item.Answer,
-                            PCWGInterimAnswer=null,
+                         
                             ReadingQuestionTrialId = item.QuestionId,
                         });
                     }
diff --git a/IRaCIS.Core.Domain/Reading/ReadingFormAnswer/ReadingTaskQuestionAnswer.cs b/IRaCIS.Core.Domain/Reading/ReadingFormAnswer/ReadingTaskQuestionAnswer.cs
index 44ed242fb..d65ba823c 100644
--- a/IRaCIS.Core.Domain/Reading/ReadingFormAnswer/ReadingTaskQuestionAnswer.cs
+++ b/IRaCIS.Core.Domain/Reading/ReadingFormAnswer/ReadingTaskQuestionAnswer.cs
@@ -38,5 +38,5 @@ public class ReadingTaskQuestionAnswer : BaseAddAuditEntity
     /// <summary>
     /// PCWG 临时Answer
     /// </summary>
-    public string? PCWGInterimAnswer { get; set; } = null;
+    public string? PCWGInterimAnswer { get; set; }
 }
diff --git a/IRaCIS.Core.Infra.EFCore/Interceptor/AuditEntityInterceptor.cs b/IRaCIS.Core.Infra.EFCore/Interceptor/AuditEntityInterceptor.cs
index 4a01ad4e7..451863fdd 100644
--- a/IRaCIS.Core.Infra.EFCore/Interceptor/AuditEntityInterceptor.cs
+++ b/IRaCIS.Core.Infra.EFCore/Interceptor/AuditEntityInterceptor.cs
@@ -87,12 +87,14 @@ public class AuditEntityInterceptor(IUserInfo _userInfo,
             //}
 
             // 检查属性是否为string类型，并且值为null
-            foreach (var property in entry.Properties.Where(t => t.Metadata.ClrType == typeof(string) && t.CurrentValue == null))
+
+            foreach (var property in entry.Properties.Where(t => t.Metadata.ClrType == typeof(string) && !t.Metadata.IsNullable && t.CurrentValue == null))
             {
 
                 property.CurrentValue = string.Empty;
             }
 
+
             switch (entry.State)
             {