网上很多人说dede:channel 调用{dede:field.SEOtitle /}

只要把{dede:field.SEOtitle /}改成[field:SEOtitle/] 就行了
可是自己试了下还是不行.
最后才发现原来要在include\taglib\channel.lib.php
找到下面黑色代码,加入下面红色代码SEOtitle,即可
位置在78行

if($type==’top’)

{

$sql = “SELECT id,typename,typedir,isdefault,ispart,defaultname,namerule2,moresite,siteurl,sitepath

From `dede_arctype` WHERE reid=0 And ishidden<>1 order by sortrank asc limit 0,$line "; } else if($type=='son') if($typeid==0) return ''; From `dede_arctype` WHERE reid='$typeid' And ishidden<>1 order by sortrank asc limit 0,arial; font-size: 16px; line-height: 24px;">
else if($type==’self’)

if($reid==0) return ”;

FROM `dede_arctype` WHERE reid=’$reid’ And ishidden<>1 order by sortrank asc limit 0,arial; font-size: 16px; line-height: 24px;">
}