diff --git a/app/Http/Controllers/Admin/BookController.php b/app/Http/Controllers/Admin/BookController.php
index 82b5498..a43ca5c 100644
--- a/app/Http/Controllers/Admin/BookController.php
+++ b/app/Http/Controllers/Admin/BookController.php
@@ -149,7 +149,7 @@ class BookController extends BaseController
         // 维护中
         $chart['maintaining'] = Book::where('status', 2)->count();
         // 分类数据
-        dd(Book::pluck('category'));
+        dd(Book::pluck('category')->collapse());
         $category = Book::pluck('category')->collapse()->unique()->values();
         return $this->success(compact('chart', 'category', 'list'));
     }