diff --git a/safety-eval-infrastructure/src/main/java/org/qinan/safetyeval/infrastructure/persistence/repository/impl/QualFilingPersonnelChangeRepositoryImpl.java b/safety-eval-infrastructure/src/main/java/org/qinan/safetyeval/infrastructure/persistence/repository/impl/QualFilingPersonnelChangeRepositoryImpl.java
index b8c14c3..f0ebcf4 100644
--- a/safety-eval-infrastructure/src/main/java/org/qinan/safetyeval/infrastructure/persistence/repository/impl/QualFilingPersonnelChangeRepositoryImpl.java
+++ b/safety-eval-infrastructure/src/main/java/org/qinan/safetyeval/infrastructure/persistence/repository/impl/QualFilingPersonnelChangeRepositoryImpl.java
@@ -166,7 +166,10 @@ public class QualFilingPersonnelChangeRepositoryImpl extends BaseRepositoryImpl<
         return qualFilingPersonnelChangeMapper.selectCount(new LambdaQueryWrapper<QualFilingPersonnelChangeDO>()
                 .eq(QualFilingPersonnelChangeDO::getFilingChangeId, filingId)
                 .eq(QualFilingPersonnelChangeDO::getDeleteEnum, BooleanQAEnum.FALSE.getValue())
-                .gt(QualFilingPersonnelChangeDO::getJoinWorkDate, joinWorkDate))
+                .and(wrapper -> wrapper
+                        .gt(QualFilingPersonnelChangeDO::getJoinWorkDate, joinWorkDate)
+                        .or()
+                        .isNull(QualFilingPersonnelChangeDO::getJoinWorkDate)))
                 .intValue();
     }
 }