diff --git a/IRaCIS.Core.Domain/Reading/ReadingCriterion/ReadingQuestionCriterionTrial.cs b/IRaCIS.Core.Domain/Reading/ReadingCriterion/ReadingQuestionCriterionTrial.cs
index e1bc0a2af..4343982af 100644
--- a/IRaCIS.Core.Domain/Reading/ReadingCriterion/ReadingQuestionCriterionTrial.cs
+++ b/IRaCIS.Core.Domain/Reading/ReadingCriterion/ReadingQuestionCriterionTrial.cs
@@ -239,7 +239,6 @@ public enum ReadingOrder
 }
 
 
-[ComplexType]
 public class DefaultSegmentNameDto
 {
     public string SegmentationName { get; set; } =string.Empty;
diff --git a/IRaCIS.Core.Infra.EFCore/Context/IRaCISDBContext.cs b/IRaCIS.Core.Infra.EFCore/Context/IRaCISDBContext.cs
index 700581332..7beb13475 100644
--- a/IRaCIS.Core.Infra.EFCore/Context/IRaCISDBContext.cs
+++ b/IRaCIS.Core.Infra.EFCore/Context/IRaCISDBContext.cs
@@ -104,10 +104,10 @@ public class IRaCISDBContext : DbContext
         modelBuilder.Entity<ReadingQuestionCriterionTrial>(entity =>
         {
             //默认SegmentName
-            entity.OwnsOne(x => x.DefaultSegmentName, ownedNavigationBuilder =>
-            {
-                ownedNavigationBuilder.ToJson();
-            });
+            entity.Property(e => e.DefaultSegmentName).HasConversion(
+                v => v == null ? null : JsonConvert.SerializeObject(v),
+                v => string.IsNullOrEmpty(v) ? new DefaultSegmentNameDto() : JsonConvert.DeserializeObject<DefaultSegmentNameDto>(v)
+            );
         });
 
         #region pgsql codefirst 配置 暂时屏蔽