diff --git a/frontend/web/assets/js/popo.js b/frontend/web/assets/js/popo.js
index c496639..0884d4f 100644
--- a/frontend/web/assets/js/popo.js
+++ b/frontend/web/assets/js/popo.js
@@ -13,11 +13,11 @@ $(function(){
     $(".model-bg").each(function (i) {
         let _that=$(this);
         _that.find(".nextPage").click(function () {
-            let key= i-1;
-            console.log(key);
+            console.log(i);
             _that.addClass("unchoose");
             $(".model-bg").eq(i+1).removeClass("unchoose");
-            $('#side-menu .av').eq(arr[i+1]).addClass('boo').eq(arr[i]).removeClass('boo');
+            $('#side-menu .av').eq(arr[i+1]).addClass('boo');
+            $('#side-menu .av').eq(arr[i]).removeClass('boo');
         });
         _that.find(".Previous").click(function () {
             _that.addClass("unchoose");