diff --git a/backend/src/main/java/com/designhub/service/TeamScorePoolService.java b/backend/src/main/java/com/designhub/service/TeamScorePoolService.java
index df17139..8f55256 100644
--- a/backend/src/main/java/com/designhub/service/TeamScorePoolService.java
+++ b/backend/src/main/java/com/designhub/service/TeamScorePoolService.java
@@ -26,24 +26,22 @@ public class TeamScorePoolService {
 
     /**
      * 根据部门ID获取积分池
-     * 如果当前部门没有积分池，向上查找父部门的积分池
+     * 使用 dept_id 关联部门（team_id 为遗留字段）。若当前部门无积分池且存在父部门，则向上查找父部门积分池（三级部门共享二级）。
      */
     public TeamScorePool getByDeptId(Long deptId) {
-        // 首先查找当前部门的积分池（使用SQL直接查询team_id字段）
         TeamScorePool pool = teamScorePoolMapper.selectOne(
             new LambdaQueryWrapper<TeamScorePool>()
-                .apply("team_id = {0}", deptId)
+                .eq(TeamScorePool::getDeptId, deptId)
         );
-        
-        // 如果当前部门没有积分池，向上查找父部门
+
         if (pool == null) {
             Department department = departmentMapper.selectById(deptId);
             if (department != null && department.getParentId() != null && department.getParentId() > 0) {
                 log.debug("部门{}没有积分池，查找父部门{}的积分池", deptId, department.getParentId());
-                return getByDeptId(department.getParentId()); // 递归查找父部门
+                return getByDeptId(department.getParentId());
             }
         }
-        
+
         return pool;
     }
 
diff --git a/database/backfill_team_score_pool_dept_id.sql b/database/backfill_team_score_pool_dept_id.sql
new file mode 100644
index 0000000..94d07e6
--- /dev/null
+++ b/database/backfill_team_score_pool_dept_id.sql
@@ -0,0 +1,10 @@
+-- 回填 team_score_pool.dept_id（便于按 dept_id 查询，二级部门可独立配置积分池）
+-- 说明：表以 dept_id 关联部门；team_id 为遗留字段。若历史数据仅有 team_id，在此统一回填 dept_id。
+-- 执行时机：修复 TeamScorePoolService 按 dept_id 查询后，建议执行一次。
+
+USE designhub;
+
+UPDATE team_score_pool
+SET dept_id = team_id
+WHERE (dept_id IS NULL OR dept_id = 0)
+  AND team_id IS NOT NULL;
diff --git a/frontend/dist.tar.gz b/frontend/dist.tar.gz
index 128a563..1310326 100644
Binary files a/frontend/dist.tar.gz and b/frontend/dist.tar.gz differ