diff --git a/algorithm/algorithm-boot/src/main/java/com/njcn/algorithm/serviceimpl/line/PqReasonableRangeServiceImpl.java b/algorithm/algorithm-boot/src/main/java/com/njcn/algorithm/serviceimpl/line/PqReasonableRangeServiceImpl.java
index 29368fa..c759dc6 100644
--- a/algorithm/algorithm-boot/src/main/java/com/njcn/algorithm/serviceimpl/line/PqReasonableRangeServiceImpl.java
+++ b/algorithm/algorithm-boot/src/main/java/com/njcn/algorithm/serviceimpl/line/PqReasonableRangeServiceImpl.java
@@ -34,7 +34,9 @@ public class PqReasonableRangeServiceImpl extends ServiceImpl<PqReasonableRangeM
     public List<PqReasonableRangeDto> getReasonableRangeList(DataCleanParam param) {
         List<PqReasonableRangeDto> result = new ArrayList<>();
         LambdaQueryWrapper<PqReasonableRange> queryWrapper = new LambdaQueryWrapper<>();
-        queryWrapper.eq(PqReasonableRange::getBelongingSystem,param.getSystemType());
+        if (StrUtil.isNotBlank(param.getSystemType())) {
+            queryWrapper.eq(PqReasonableRange::getBelongingSystem,param.getSystemType());
+        }
         if(StrUtil.isNotBlank(param.getDataSource())){
             queryWrapper.eq(PqReasonableRange::getDataSource,param.getDataSource());
         }