diff --git a/contact-center/app/src/main/resources/templates/apps/im/chatbot/mobile.html b/contact-center/app/src/main/resources/templates/apps/im/chatbot/mobile.html
index af84e3ec..226b494f 100644
--- a/contact-center/app/src/main/resources/templates/apps/im/chatbot/mobile.html
+++ b/contact-center/app/src/main/resources/templates/apps/im/chatbot/mobile.html
@@ -207,7 +207,7 @@
     </style>
     <!-- kindeditor -->
 </head>
-<body class="ukefu-im-theme" style="overflow:hidden;height:calc(100%);overflow-y: atuo;/* 或者scroll */-webkit-overflow-scrolling: touch;/* 解决ios滑动不流畅问题 */" class="ukefu-point-text">
+<body class="ukefu-im-theme" style="overflow:hidden;height:100%;max-height:100%;position:fixed;overflow-y: atuo;/* 或者scroll */-webkit-overflow-scrolling: touch;/* 解决ios滑动不流畅问题 */" class="ukefu-point-text">
 <div id="header" class="theme${inviteData.consult_dialog_color!''}">
     <img
             src="<#if inviteData?? && inviteData.consult_dialog_logo??>/res/image.html?id=${inviteData.consult_dialog_logo?url}<#else>/images/logo.png</#if>"
