diff --git a/IRaCIS.Core.Domain/Reading/ReadingCriterionQuestion/ReadingQuestionTrial.cs b/IRaCIS.Core.Domain/Reading/ReadingCriterionQuestion/ReadingQuestionTrial.cs
index 6d1fd4594..dc8052af2 100644
--- a/IRaCIS.Core.Domain/Reading/ReadingCriterionQuestion/ReadingQuestionTrial.cs
+++ b/IRaCIS.Core.Domain/Reading/ReadingCriterionQuestion/ReadingQuestionTrial.cs
@@ -157,16 +157,16 @@ public class ReadingQuestionTrial : BaseAddAuditEntity
     public Guid? SystemParentId { get; set; }
 
     [Comment("答案分组")]
-    public string AnswerGroup { get; set; } = string.Empty;
+    public string AnswerGroup { get; set; } = "[]";
 
     [Comment("答案组合")]
-    public string AnswerCombination { get; set; } = string.Empty;
+    public string AnswerCombination { get; set; } = "[]";
 
     [Comment("裁判类型")]
     public JudgeTypeEnum JudgeType { get; set; } = JudgeTypeEnum.AnswerDisaffinity;
 
     [Comment("裁判百分比或绝对值的相差值")]
-    public decimal? JudgeDifferenceValue { get; set; }
+    public decimal? JudgeDifferenceValue { get; set; } = 0;
 
     [Comment("裁判百分比或绝对值的相差值匹配规则")]
     public JudgeDifferenceType JudgeDifferenceType { get; set; }