diff --git a/src/main/java/com/sztzjy/financial_bigdata/service/stu/impl/TheoryTestServiceImpl.java b/src/main/java/com/sztzjy/financial_bigdata/service/stu/impl/TheoryTestServiceImpl.java
index c403e98..8aba520 100644
--- a/src/main/java/com/sztzjy/financial_bigdata/service/stu/impl/TheoryTestServiceImpl.java
+++ b/src/main/java/com/sztzjy/financial_bigdata/service/stu/impl/TheoryTestServiceImpl.java
@@ -236,7 +236,7 @@ public class TheoryTestServiceImpl implements ITheoryTestService {
             } else {
                 stuError.setJudgeIds(String.valueOf(theoryTestDto.getJudgeErrorIds()));
             }
-            errorMapper.updateByPrimaryKey(stuError);
+            errorMapper.updateByPrimaryKeySelective(stuError);
         }
         UpdateTheoryRecord(theoryTestDto.getUserId(), theoryTestDto.getScore(), theoryTestDto.getExamDuration());
         return i;