diff --git a/homepage.html b/homepage.html
index 501f298..e8bb451 100644
--- a/homepage.html
+++ b/homepage.html
@@ -62,7 +62,7 @@
       <div id="rotation" v-if="layout=='2'">
         <!-- 顶部banner -->
         <div class="topBanner">
-          <img class="backpresty" @click="backgoodsFn" v-if="goodsShow"
+          <img class="backpresty" @click="backgoodsFn" v-if="backAble"
             src="https://lsxdemall.oss-cn-beijing.aliyuncs.com/MarketingSystem/img/backprepageBtn.png" alt="">
           <img :src="topImg" alt="">
         </div>
@@ -106,7 +106,7 @@
       <!-- 列表 -->
       <div id="list" v-if="layout=='1'">
         <div class="topBanner">
-          <img class="backpresty" @click="backgoodsFn"  v-if="goodsShow"
+          <img class="backpresty" @click="backgoodsFn"  v-if="backAble"
             src="https://lsxdemall.oss-cn-beijing.aliyuncs.com/MarketingSystem/img/backprepageBtn.png" alt="">
           <img :src="topImg" alt="">
         </div>
@@ -131,7 +131,7 @@
       <!-- 矩阵 -->
       <div id="matrix" v-if="layout=='3'">
         <div class="topBanner">
-          <img class="backpresty" @click="backgoodsFn"  v-if="goodsShow"
+          <img class="backpresty" @click="backgoodsFn"  v-if="backAble"
             src="https://lsxdemall.oss-cn-beijing.aliyuncs.com/MarketingSystem/img/backprepageBtn.png" alt="">
           <img :src="topImg" alt="">
 
@@ -221,6 +221,7 @@
         popboxtype: '兑换',
         topImg: '',
         goodsShow: true,
+        backAble:true,
         goodsNum: false,
         exchangeCommity: {}, //兑换选择的商品
         bgcolor: '',
@@ -330,6 +331,7 @@
 
           self.swiperDataList = goodsArr;
           self.goodsShow = goodsArr.length > 1;
+          self.backAble=goodsArr.length > 1&&window.history.length>0;
           sessionStorage.setItem('goodsCount', goodsArr.length);
           if (goodsArr && goodsArr.length == 1&&goodsArr[0].available==1) {
             sessionStorage.setItem('goodsInfo', JSON.stringify(goodsArr[0]));
@@ -367,6 +369,7 @@
               self.swiperDataList = res.data;
               sessionStorage.setItem('goodsCount',res.data.length);
               self.goodsShow = res.data.length > 1;
+              self.backAble=res.data.length > 1&&window.history.length>0;
               if (res.data && res.data.length == 1&&res.data[0].available==1) {
                   sessionStorage.setItem('goodsInfo', JSON.stringify(res.data[0]));
                   window.location.href = "./exchange.html";