您可以通过添加按钮add_meta_box 作用

function add_your_meta_box(){

add_meta_box(\'your-metabox-id\', \'Title\', \'function_of_metabox\', \'custom_post_type\', \'side\', \'high\');}

add_action(\'add_meta_boxes\', \'add_your_meta_box\'); 

function function_of_metabox()
{?>
    <input type="submit" class="button button-primary button-large" value="Add New" id="add-new"/>
<?php }

function add_your_meta_box(){

  $types = array("post","page","custom_post_type");

  foreach($types as $type){

    add_meta_box(\'your-metabox-id\', \'Title\', \'function_of_metabox\', $type, \'side\', \'high\');}

}

add_action(\'add_meta_boxes\', \'add_your_meta_box\'); 

像这样：

function custom_js_to_head() {
    ?>
    <script>
    jQuery(function(){
        jQuery("body.post-type-YOUR-CUSTOM-POST-TYPE .wrap h1").append(\'<a href="index.php?param=your-action" class="page-title-action">Import from ...</a>\');
    });
    </script>
    <?php
}
add_action(\'admin_head\', \'custom_js_to_head\');