快捷键（&A）；将标题设置为标题的错误方法是使用SQL（未测试）：

UPDATE wp_posts 
SET post_excerpt = post_title 
WHERE  
        post_excerpt    = \'\' 
    AND post_type       = \'attachment\' 
    AND post_status     = \'inherit\'
    AND post_mime_type  = \'image/jpeg\'
    AND ID              = 123

注：我添加了ID = 123 和post_mime_type = \'image/jpeg\' 作为测试时可以调整的额外限制。还请记住调整的表名wp_posts.

警告：测试前备份数据库！

如果你在寻找一种动态的方式my answer 这可能与此有关。

您也可以在上载图像时添加标题：

/**
 * Automatically set the title as caption, when uploading an attachment.
 *
 * @see https://wordpress.stackexchange.com/a/188708/26350
 */
add_filter( \'wp_insert_attachment_data\', function( $data, $postarr )
{    
    // Let\'s target only the uploading process and not the updating of attachments:
    if( empty( $data[\'post_excerpt\'] ) && isset( $postarr[\'ID\'] ) && 0 == $postarr[\'ID\'] )
        $data[\'post_excerpt\'] = $data[\'post_title\'];

    return $data;
}, 10, 2 );