我已经解决了

供上一次/下次使用Ambrosite Next/Previous Post Link Plus

要获取当前/全部，请在循环中使用以下代码

        $query = new WP_Query( array(
            \'post_type\' => \'works\',
            \'post_status\' => \'publish\',
            \'posts_per_page\' => \'-1\',
            \'tax_query\' => array(
                    array(
                        \'taxonomy\' => \'work_category\',
                        \'field\' => \'slug\',
                        \'terms\' => \'design\'
                    )
            ),
            \'order\' => \'ASC\'
        ) );
        $all = $query->post_count;
        foreach( $query->posts as $key => $p )
            if( $post->ID == $p->ID ) $current = $key + 1;

        echo $current.\'/\'.$all;