diff --git a/Tiobon.Core.Services/Ghre/Ghre_ExamRecordServices.cs b/Tiobon.Core.Services/Ghre/Ghre_ExamRecordServices.cs
index a3156c49..c30075ba 100644
--- a/Tiobon.Core.Services/Ghre/Ghre_ExamRecordServices.cs
+++ b/Tiobon.Core.Services/Ghre/Ghre_ExamRecordServices.cs
@@ -160,7 +160,7 @@ public class Ghre_ExamRecordServices : BaseServices<Ghre_ExamRecord, Ghre_ExamRe
         if (paper == null)
             return ServiceResult.OprateFailed("该考试管理的试卷已被删除，暂不可变更调整分！");
 
-        entity.AdjustScore = edit.AdjustScore;
+        entity.AdjustScore = edit.AdjustScore ?? 0;
         //entity.Score += entity.AdjustScore;
 
         string score1 = Regex.Replace(entity.Score.ToString(), @"\.(0+)$", "") + "/" + Regex.Replace(entity.Score.ToString(), @"\.(0+)$", "");
@@ -409,7 +409,7 @@ public class Ghre_ExamRecordServices : BaseServices<Ghre_ExamRecord, Ghre_ExamRe
         var paperId = record.ExamPaperId;
         var examPaper = await Db.Queryable<Ghre_ExamPaper>().Where(x => x.Id == paperId).FirstAsync();
         if (examPaper != null)
-            record.IsPass = examPaper.PassScore > (record.Score + record.AdjustScore) ? false : true;
+            record.IsPass = examPaper.PassScore > (record.Score + (record.AdjustScore ?? 0)) ? false : true;
         record.Score = details.Sum(x => x.Score);
         record.Score = extend.questionList.Sum(x => x.RealScore);
         await Db.Updateable(record).ExecuteCommandAsync();