只要在
include\taglib\channel.lib.php   
 
找到下面黑色代码,加入下面红色代码 
description,即可
 
位置在78行
 
 if($type==’top’)
    {
        $sql = “SELECT id,typename,
description,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 ”;
        $sql = “SELECT id,typename,
description,typedir,isdefault,ispart,defaultname,namerule2,moresite,siteurl,sitepath
          From `dede_arctype` WHERE reid=’$typeid’ And ishidden<>1 order by sortrank asc limit 0, $line “;
    }
    else if($type==’self’)
    {
        if($reid==0) return ”;
        $sql = “SELECT id,typename,
description,typedir,isdefault,ispart,defaultname,namerule2,moresite,siteurl,sitepath
            FROM `dede_arctype` WHERE reid=’$reid’ And ishidden<>1 order by sortrank asc limit 0, $line “;
    }

然后即可调用:

例如:

{dede:channel type=’son’ typeid=’21’}

<p>[field:description/]</p>

{/dede:channel}