diff --git a/src/main/java/com/yunhai/bschclassmanage/service/impl/SchDicSubjectService.java b/src/main/java/com/yunhai/bschclassmanage/service/impl/SchDicSubjectService.java
index 1d1af47..ba02a01 100644
--- a/src/main/java/com/yunhai/bschclassmanage/service/impl/SchDicSubjectService.java
+++ b/src/main/java/com/yunhai/bschclassmanage/service/impl/SchDicSubjectService.java
@@ -348,6 +348,16 @@ public class SchDicSubjectService implements ISchDicSubjectService {
         List<SchDicSubject> list = getSchDicSubjectCacheList(schId, schsystemId).stream()
                 .filter(s -> Boolean.TRUE.equals(s.getEnable()))
                 .collect(Collectors.toList());
-        return ModelMapperUtil.toMap(list, SchDicSubject::getCode, SchDicSubject::getName);
+        // 按序号升序排序（null 排最后），与学科管理列表口径一致
+        list.sort(Comparator.comparing(SchDicSubject::getSort,
+                Comparator.nullsLast(Comparator.naturalOrder())));
+        // LinkedHashMap 保持排序后的遍历顺序；重复 code 保留第一个
+        Map<String, String> map = new LinkedHashMap<>();
+        for (SchDicSubject subject : list) {
+            if (subject.getCode() != null) {
+                map.putIfAbsent(subject.getCode(), subject.getName());
+            }
+        }
+        return map;
     }
 }