diff --git a/backend/src/main/java/com/designhub/service/TaskService.java b/backend/src/main/java/com/designhub/service/TaskService.java
index 267cc34..80b8c4f 100644
--- a/backend/src/main/java/com/designhub/service/TaskService.java
+++ b/backend/src/main/java/com/designhub/service/TaskService.java
@@ -701,7 +701,7 @@ public class TaskService {
         // 获取用户所属部门类型
         String deptType = null;
         if (user.getDeptId() != null) {
-            Department dept = departmentMapper.selectById(user.getDeptId());
+            Department dept = departmentService.getDepartmentById(user.getDeptId());
             if (dept != null) {
                 deptType = dept.getDeptType();
             }