diff --git a/src/main/java/com/biutag/supervision/service/report/impl/ReportBusinessLineSectionServiceImpl.java b/src/main/java/com/biutag/supervision/service/report/impl/ReportBusinessLineSectionServiceImpl.java
index 269b7ac..74faf44 100644
--- a/src/main/java/com/biutag/supervision/service/report/impl/ReportBusinessLineSectionServiceImpl.java
+++ b/src/main/java/com/biutag/supervision/service/report/impl/ReportBusinessLineSectionServiceImpl.java
@@ -143,21 +143,21 @@ public class ReportBusinessLineSectionServiceImpl implements ReportBusinessLineS
         // 本期按业务条线分组
         Map<String, List<NegativeQueryVo>> currentGroup = currentList.stream()
                 .collect(Collectors.groupingBy(
-                        NegativeQueryVo::getProblemSourcesCode,
+                        vo -> StrUtil.blankToDefault(vo.getProblemSourcesCode(), "UNKNOWN"),
                         LinkedHashMap::new,
                         Collectors.toList()
                 ));
         // 环比分组
         Map<String, List<NegativeQueryVo>> momGroup = momList.stream()
                 .collect(Collectors.groupingBy(
-                        NegativeQueryVo::getProblemSourcesCode,
+                        vo -> StrUtil.blankToDefault(vo.getProblemSourcesCode(), "UNKNOWN"),
                         LinkedHashMap::new,
                         Collectors.toList()
                 ));
         // 同比分组
         Map<String, List<NegativeQueryVo>> yoyGroup = yoyList.stream()
                 .collect(Collectors.groupingBy(
-                        NegativeQueryVo::getProblemSourcesCode,
+                        vo -> StrUtil.blankToDefault(vo.getProblemSourcesCode(), "UNKNOWN"),
                         LinkedHashMap::new,
                         Collectors.toList()
                 ));