diff --git a/plugs/think-plugs-cms/src/controller/api/Category.php b/plugs/think-plugs-cms/src/controller/api/Category.php
index 2e937a9..f698e7a 100644
--- a/plugs/think-plugs-cms/src/controller/api/Category.php
+++ b/plugs/think-plugs-cms/src/controller/api/Category.php
@@ -8,7 +8,12 @@ use think\admin\Controller;
 class Category extends Controller
 {
     public function index() {
-        $categories = CmsCategory::mk()->where('status', 1)->order('sort asc,id desc')->field("id, name")->select();
+        $pid = $this->request->get('pid');
+        $query = CmsCategory::mk()->where('status', 1)->order('sort asc,id desc')->field("id, name");
+        if ($pid > 0) {
+            $query->where('pid', $pid);
+        }
+        $categories = $query->select();
         $this->success('获取分类成功', $categories);
     }
 }
\ No newline at end of file