diff --git a/nursing-unit-invoicing/nu-invoicing-biz/src/main/java/com/nu/modules/pdd/service/impl/NuInvoicingPddMainServiceImpl.java b/nursing-unit-invoicing/nu-invoicing-biz/src/main/java/com/nu/modules/pdd/service/impl/NuInvoicingPddMainServiceImpl.java
index fcdc88e5..f1f6f2ce 100644
--- a/nursing-unit-invoicing/nu-invoicing-biz/src/main/java/com/nu/modules/pdd/service/impl/NuInvoicingPddMainServiceImpl.java
+++ b/nursing-unit-invoicing/nu-invoicing-biz/src/main/java/com/nu/modules/pdd/service/impl/NuInvoicingPddMainServiceImpl.java
@@ -154,7 +154,7 @@ public class NuInvoicingPddMainServiceImpl extends ServiceImpl<NuInvoicingPddMai
         }else if (StringUtils.equals("3",invoicingPddInfoEntity.getParamType())){
             queryWrapper.gt("pdsl",0);
         }else if (StringUtils.equals("4",invoicingPddInfoEntity.getParamType())){
-            queryWrapper.eq("pdsl",null);
+            queryWrapper.isNull("pdsl");
         }
         Page<NuInvoicingPddInfo> page = new Page<>(pageNo, pageSize);
         List<NuInvoicingPddInfo> list = pddInfoMapper.selectList(page,queryWrapper);