diff --git a/src/main/java/com/qs/serve/modules/bms/controller/BmsSubjectController.java b/src/main/java/com/qs/serve/modules/bms/controller/BmsSubjectController.java
index 69a78933..48c24fc1 100644
--- a/src/main/java/com/qs/serve/modules/bms/controller/BmsSubjectController.java
+++ b/src/main/java/com/qs/serve/modules/bms/controller/BmsSubjectController.java
@@ -64,7 +64,7 @@ public class BmsSubjectController {
             treeNode.setSort(0);
             return treeNode;
         }).collect(Collectors.toList());
-        if(1==slottingFlag){
+        if(slottingFlag!=null && slottingFlag==1){
             List<BmsSubjectTreeVo> slottingList = treeVoList.stream().filter(a->a.getSlottingFlag().equals(1)).collect(Collectors.toList());
             List<BmsSubjectTreeVo> newTreeVoList = new ArrayList<>();
             newTreeVoList.addAll(slottingList);