电脑版：

打开 /template/default/common/header_common.htm 文件

找到

<title><!--{if !empty($navtitle)}-->$navtitle - <!--{/if}--><!--{if empty($nobbname)}--> $_G['setting']['bbname'] - <!--{/if}--> Powered by Discuz!</title>  

删除Powered by Discuz!即可

手机版之标准版：

打开 /template/default/mobile/common/header.htm 文件

找到

<title><!--{if !empty($navtitle)}-->$navtitle - <!--{/if}--><!--{if empty($nobbname)}--> $_G['setting']['bbname'] - <!--{/if}--> {lang waptitle} - Powered by Discuz!</title>  

删除Powered by Discuz!即可

手机版之触屏版：

打开 /template/default/touch/common/header.htm 文件

找到

<title><!--{if !empty($navtitle)}-->$navtitle - <!--{/if}--><!--{if empty($nobbname)}--> $_G['setting']['bbname'] - <!--{/if}--> {lang waptitle} - Powered by Discuz!</title>  

删除Powered by Discuz!即可