你可以\'attachment_fields_to_edit\' 只需添加一行：

<?php # -*- coding: utf-8 -*-
/**
 * Plugin Name: T5 Show Attachment ID
 * Version:     2012.06.04
 * Author:      Thomas Scholz <info@toscho.de>
 * Author URI:  http://toscho.de
 * License:     MIT
 * License URI: http://www.opensource.org/licenses/mit-license.php
 */

if ( ! function_exists( \'t5_show_attachment_id\' ) )
{
    add_filter( \'attachment_fields_to_edit\', \'t5_show_attachment_id\', 10, 2 );

    function t5_show_attachment_id( $form_fields, $post )
    {
        $form_fields[\'t5_id\'] = array (
                \'label\'      => \'ID\',
                \'input\'      => \'html\',
                \'html\'       => "<strong>$post->ID</strong>",
        );
        return $form_fields;
    }
}