{pc:get sql="select * from phpcms_category where catid in(你的子栏目ID)" return="data"}
{loop $data $r}
<a href="{$r['url']}">{$r['catname']}</a>
{/loop}
{/pc}
如果你的子栏目ID是8,9,10的话,条件哪里就写成in(8,9,10)