这个技巧应该可以帮助你。。。

<?php
add_action(\'pre_get_posts\', \'filter_posts_list\');
function filter_posts_list($query)
{
    //$pagenow holds the name of the current page being viewed
    global $pagenow;
    $post_type = $query->get(\'post_type\');

    //Check the post type and whether its the list page, then set the taxonomy
    if($post_type == \'my_cpt\' && \'edit.php\' == $pagenow)
    {
        //global $query\'s set() method for setting the taxonomy
        $query->set(\'my_taxonomy\', \'my_taxonomy_value\');
    }
}
?>