您可以通过删除所有帖子$wpdb

DELETE FROM wp_posts WHERE post_type=\'post_type\';
DELETE FROM wp_postmeta WHERE post_id NOT IN (SELECT id FROM wp_posts);
DELETE FROM wp_term_relationships WHERE object_id NOT IN (SELECT id FROM wp_posts)

DELETE a,b,c
    FROM wp_posts a
    LEFT JOIN wp_term_relationships b
        ON (a.ID = b.object_id)
    LEFT JOIN wp_postmeta c
        ON (a.ID = c.post_id)
    WHERE a.post_type = \'{{your CPT}}\';

您可以使用各种方法删除自定义帖子类型的所有帖子，但这里我将向您展示如何在不使用SQL查询的情况下执行此操作。例如，我们的帖子类型是product

$allposts= get_posts( array(\'post_type\'=>\'product\',\'numberposts\'=>-1) );
foreach ($allposts as $eachpost) {
wp_delete_post( $eachpost->ID, true );
}

See full tutorial Reference Here

现在可以用WordPress CLI 使用wp post delete. 安装CLI后，以下终端命令（位于站点的根目录中）将删除所有类型的帖子mycustomtype:

wp post delete $(wp post list --post_type=\'mycustomtype\' --format=ids)