diff --git a/beike/Shop/Http/Controllers/CategoryController.php b/beike/Shop/Http/Controllers/CategoryController.php
index 38e4e1a6..f181fc45 100644
--- a/beike/Shop/Http/Controllers/CategoryController.php
+++ b/beike/Shop/Http/Controllers/CategoryController.php
@@ -3,25 +3,20 @@
 namespace Beike\Shop\Http\Controllers;
 
 use Beike\Models\Category;
-use Beike\Models\Product;
-use Beike\Shop\Http\Resources\CategoryItem;
-use Beike\Shop\Repositories\CategoryRepo;
 use Illuminate\Http\Request;
+use Beike\Shop\Repositories\CategoryRepo;
+use Beike\Shop\Repositories\ProductRepo;
 
 class CategoryController extends Controller
 {
     public function index(Request $request)
     {
-        $items = CategoryRepo::list();
-        return CategoryItem::collection($items);
+        return CategoryRepo::list();
     }
 
     public function show(Request $request, Category $category)
     {
-        $products = Product::query()
-            ->with('description')
-            ->latest()
-            ->paginate();
+        $products = ProductRepo::getProductsBuilder($category)->paginate();
 
         $data = [
             'category' => $category,
diff --git a/beike/Shop/Repositories/ProductRepo.php b/beike/Shop/Repositories/ProductRepo.php
index b0a17cee..21f25541 100644
--- a/beike/Shop/Repositories/ProductRepo.php
+++ b/beike/Shop/Repositories/ProductRepo.php
@@ -13,6 +13,7 @@ namespace Beike\Shop\Repositories;
 
 use Beike\Models\Product;
 use Beike\Shop\Http\Resources\ProductList;
+use Illuminate\Database\Eloquent\Builder;
 
 class ProductRepo
 {
@@ -37,19 +38,30 @@ class ProductRepo
      * @return array
      */
     public static function getProductsByCategory($categoryId): array
+    {
+        $builder = self::getProductsBuilder($categoryId);
+        $products = $builder->get();
+        $items = ProductList::collection($products)->jsonSerialize();
+        return $items;
+    }
+
+
+    /**
+     * 获取 Builder
+     * @param $categoryId
+     * @return Builder
+     */
+    public static function getProductsBuilder($categoryId): Builder
     {
         if (is_int($categoryId)) {
             $categoryId[] = $categoryId;
         }
-        $products = Product::query()
+        $builder = Product::query()
             ->select(['products.*', 'pc.category_id'])
             ->with(['description'])
             ->join('product_categories as pc', 'products.id', '=', 'pc.product_id')
             ->join('categories as c', 'pc.category_id', '=', 'c.id')
-            ->whereIn('c.id', $categoryId)
-            ->get();
-
-        $items = ProductList::collection($products)->jsonSerialize();
-        return $items;
+            ->whereIn('c.id', $categoryId);
+        return $builder;
     }
 }