我认为您需要使用重写参数。

下面是一个将url设置为tips的示例

$args = array(
    \'public\' => true,
    \'publicly_queryable\' => true,
    \'show_ui\' => true, 
    \'show_in_menu\' => true, 
    \'query_var\' => true,
    \'rewrite\' => array( \'slug\' => \'tips\' ), // Here!
    \'capability_type\' => \'post\',
    \'has_archive\' => true, 
    \'hierarchical\' => false,
    \'menu_position\' => 20,
    \'supports\' => array( \'title\', \'editor\', \'author\', \'thumbnail\', \'excerpt\', \'comments\', \'revisions\', \'custom-fields\')
  ); 

  register_post_type( \'tips\', $args );