diff --git a/public/main.html b/public/main.html
index 0079859..610f3aa 100644
--- a/public/main.html
+++ b/public/main.html
@@ -8,7 +8,7 @@
     <link rel="stylesheet" href="styles-main.css">
 </head>
 <body background="./bg.png" style="background-size:100% 100%; background-attachment: fixed;">
-    <button class="BackButton" id="BackButton">退出登录</button>
+    <button class="BackButton" id="BackButton">退出登录回</button>
     <div class="slider-container">
         <input type="range" id="mySlider" min="0" max="100" value="50">
         <span id="sliderValue">50</span>
