diff --git a/pages/index/cart.vue b/pages/index/cart.vue
index c67c8b6a..2485ae84 100644
--- a/pages/index/cart.vue
+++ b/pages/index/cart.vue
@@ -151,6 +151,7 @@
       cart.delete(cartItem.id);
       return;
     }
+    if(cartItem.goods_num === e) return;
     cartItem.goods_num = e;
     cart.update({
       goods_id: cartItem.goods_id,