diff --git a/js/main.js b/js/main.js
index 5b5cae2..585aac1 100644
--- a/js/main.js
+++ b/js/main.js
@@ -8,7 +8,8 @@ let isClose = true,
     headerMask = $('.menu-mask'),
     headerMenuBtn = $('.btn-img'),
     isMobile = $(window).width() <= 768,
-    currentRem = 0;
+    currentRem = 0,
+    exchangeLogo = false;
 
 function getRem() {
     let windowWidth = window.innerWidth
@@ -20,13 +21,9 @@ function rszcal() {
 }
 
 function headerEffect() {
-    let t = $(document).scrollTop(), flag;
-    // if (!isMobile) {
-    //     flag = t > 2.5 * currentRem;
-    // } else {
-        flag = t > 2.5 * currentRem;
-    // }
-    if (flag) {
+    let t = $(document).scrollTop();
+    exchangeLogo = t > 2.5 * currentRem;
+    if (exchangeLogo) {
         header.removeClass('style1').addClass('style2');
     } else {
         header.removeClass('style2').addClass('style1');
@@ -36,6 +33,9 @@ function headerEffect() {
 let t1;
 function showMenu() {
     clearTimeout(t1);
+    if (exchangeLogo) {
+        header.removeClass('style2').addClass('style1');
+    }
     heaerMenuGroup.show().removeClass('iFadeOut').addClass('iFadeIn');
     headerMask.show().removeClass('iFadeOut').addClass('iFadeIn');
     headerMenuBtn.attr('src', window.Config.staticDir + '/images/guanbi.png');
@@ -44,6 +44,9 @@ function showMenu() {
 }
 
 function hideMenu() {
+    if (exchangeLogo) {
+        header.removeClass('style1').addClass('style2');
+    }
     heaerMenuGroup.removeClass('iFadeIn').addClass('iFadeOut');
     headerMask.removeClass('iFadeIn').addClass('iFadeOut');
     headerMenuBtn.attr('src', window.Config.staticDir + '/images/menu.png');