diff --git a/components/cart/cart.vue b/components/cart/cart.vue
index e61a9585..40c8dd60 100644
--- a/components/cart/cart.vue
+++ b/components/cart/cart.vue
@@ -35,7 +35,7 @@
                 </view>
             </block>
             <block v-else>
-                <!-- #ifdef MP-WEIXIN || MP-BAIDU || MP-QQ || MP-KUAISHOU || APP -->
+                <!-- #ifdef MP-WEIXIN || MP-BAIDU || MP-QQ || MP-KUAISHOU || MP-ALIPAY || APP -->
                 <component-nav-back propClass="bg-white" propNameClass="cr-black" :propName="$t('common.cart')" :propFixed="false" :propIsShowBack="propSourceType !== 'page' ? false : true" :propIsRightSlot="false"></component-nav-back>
                 <!-- #endif -->
             </block>
diff --git a/components/nav-back/nav-back.vue b/components/nav-back/nav-back.vue
index 9aef2dd2..e3374e05 100644
--- a/components/nav-back/nav-back.vue
+++ b/components/nav-back/nav-back.vue
@@ -3,8 +3,8 @@
         <view class="pa-w" :class="(propFixed ? 'pf z-i left-0 top-0 right-0' : '') + ' ' + propClass" :style="'padding-top:' + (status_bar_height > 0 ? status_bar_height + 5 : 0) + 'px;background-color:rgba(255,255,255,' + opacity + ');' + propStyle">
             <!-- 返回 -->
             <view v-if="(propName || null) != null || propIsRightSlot || propIsShowBack" class="nav-back padding-horizontal-main round va-m flex-row align-c" :class="(opacity > 0.3 ? 'cr-black ' : 'cr-white ') + (status_bar_height > 0 ? '' : 'padding-vertical-main')">
-                <!-- #ifndef MP-ALIPAY -->
                 <view v-if="(propName || null) != null" :class="'text-size-md tc pa left-0 right-0 padding-top-xs '+propNameClass" :style="propNameOpacity ? (opacity ? 'color:rgba(51,51,51,' + opacity + ')' : '') : ''">{{ propName }}</view>
+                <!-- #ifndef MP-ALIPAY -->
                 <iconfont v-if="propIsShowBack" name="icon-arrow-left" size="40rpx" @tap="top_nav_left_back_event" propClass="pr top-xs z-i" :color="propColor"></iconfont>
                 <!-- #endif -->
                 <slot v-if="propIsRightSlot" name="right"></slot>
@@ -77,7 +77,6 @@
             };
         },
         mounted() {
-            // #ifndef MP-ALIPAY
             var self = this;
             uni.$on('onPageScroll', function (e) {
                 var top = e.scrollTop > 47 ? 1 : e.scrollTop / 47;
@@ -85,7 +84,6 @@
                     opacity: top,
                 });
             });
-            // #endif
         },
         methods: {
             top_nav_left_back_event() {