diff --git a/beike/Models/Cart.php b/beike/Models/Cart.php
index b937f060..054d955b 100644
--- a/beike/Models/Cart.php
+++ b/beike/Models/Cart.php
@@ -2,8 +2,9 @@
 
 namespace Beike\Models;
 
-use Illuminate\Database\Eloquent\Factories\HasFactory;
 use Illuminate\Database\Eloquent\Model;
+use Illuminate\Database\Eloquent\Relations\BelongsTo;
+use Illuminate\Database\Eloquent\Factories\HasFactory;
 
 class Cart extends Model
 {
@@ -11,7 +12,7 @@ class Cart extends Model
 
     protected $fillable = ['customer_id', 'selected', 'product_id', 'product_sku_id', 'quantity'];
 
-    public function sku()
+    public function sku(): BelongsTo
     {
         return $this->belongsTo(ProductSku::class, 'product_sku_id', 'id');
     }
diff --git a/database/factories/Beike/Models/CartFactory.php b/database/factories/Beike/Models/CartFactory.php
new file mode 100644
index 00000000..cb075829
--- /dev/null
+++ b/database/factories/Beike/Models/CartFactory.php
@@ -0,0 +1,31 @@
+<?php
+/**
+ * 创建购物车商品记录
+ * \Beike\Models\Cart::factory(300)->create(['customer_id'=>2])
+ */
+
+namespace Database\Factories\Beike\Models;
+
+use Beike\Models\Cart;
+use Illuminate\Database\Eloquent\Factories\Factory;
+
+class CartFactory extends Factory
+{
+    protected $model = Cart::class;
+
+    /**
+     * Define the model's default state.
+     *
+     * @return array
+     */
+    public function definition(): array
+    {
+        return [
+            'customer_id' => 0,
+            'selected' => 1,
+            'product_id' => rand(1, 1000),
+            'product_sku_id' => rand(1, 1000),
+            'quantity' => rand(1, 10)
+        ];
+    }
+}