diff --git a/src/main/java/xyz/playedu/api/controller/backend/CourseController.java b/src/main/java/xyz/playedu/api/controller/backend/CourseController.java
index 2488d29..8100a62 100644
--- a/src/main/java/xyz/playedu/api/controller/backend/CourseController.java
+++ b/src/main/java/xyz/playedu/api/controller/backend/CourseController.java
@@ -1,6 +1,5 @@
 package xyz.playedu.api.controller.backend;
 
-import cn.hutool.core.lang.hash.Hash;
 import lombok.extern.slf4j.Slf4j;
 import org.apache.commons.collections4.MapUtils;
 import org.springframework.beans.factory.annotation.Autowired;
diff --git a/src/main/java/xyz/playedu/api/controller/backend/DepartmentController.java b/src/main/java/xyz/playedu/api/controller/backend/DepartmentController.java
index dcc2254..b086fdc 100644
--- a/src/main/java/xyz/playedu/api/controller/backend/DepartmentController.java
+++ b/src/main/java/xyz/playedu/api/controller/backend/DepartmentController.java
@@ -94,6 +94,7 @@ public class DepartmentController {
         HashMap<String, Object> data = new HashMap<>();
         data.put("courses", new ArrayList<>());
         data.put("users", new ArrayList<>());
+        data.put("children", departmentService.listByParentId(id));
 
         if (courseIds != null && courseIds.size() > 0) {
             data.put("courses", courseService.chunks(courseIds, new ArrayList<>() {{
diff --git a/src/main/java/xyz/playedu/api/controller/backend/ResourceCategoryController.java b/src/main/java/xyz/playedu/api/controller/backend/ResourceCategoryController.java
index 01b96f2..8924453 100644
--- a/src/main/java/xyz/playedu/api/controller/backend/ResourceCategoryController.java
+++ b/src/main/java/xyz/playedu/api/controller/backend/ResourceCategoryController.java
@@ -92,6 +92,7 @@ public class ResourceCategoryController {
         List<Integer> rids = categoryService.getRidsById(id);
 
         HashMap<String, Object> data = new HashMap<>();
+        data.put("children", categoryService.listByParentId(id));
         data.put("courses", new ArrayList<>());
         data.put("videos", new ArrayList<>());
         data.put("images", new ArrayList<>());