在移动端的模板中找到路径：mobile/resources/views/goods/index.html，分别在786和788行下面新增一条代码

<a class="btn-cart box-flex add-to-cart" href="javascript:;" onclick="addToCart({$goods.goods_id})" {if $goods.review_status <= 2}style="display:none"{/if}>立即购买</a> <!--QQ:1859389 CXCBLOG.COM-->

效果图如下：