我认为你正在执行reset_postdata() 太早了，使用全局$post 对象错误地位于次循环内，并将错误的参数传递给次循环。试试这个。

在函数中放置函数以获取最新的作者帖子。php文件：

function the_latest_author_posts($post) {

        //some content goes here regarding the post itself!!!
        $relatedargs = array(

             \'author\' => $post->post_author,
             \'post__not_in\' => array( $post->ID),
             \'posts_per_page\' => 3

        );

        $relatedquery = new WP_Query( $relatedargs );

        while($relatedquery->have_posts()){
             $relatedquery->the_post(); 
             $ID = get_the_ID();
        ?>

             <div class="span3">

             <?php
                  if(has_post_thumbnail()) { 
                       $relatedthumbnail = wp_get_attachment_image_src( get_post_thumbnail_id($ID), \'medium\', false);
                       $relatedthumbnail_large = wp_get_attachment_image_src( get_post_thumbnail_id($ID), \'full\', false);
?>

                       <div class="hover_colour"><a href="<?php echo $relatedthumbnail_large[\'0\']; ?>" rel="prettyPhoto"><img src="<?php echo $relatedthumbnail[\'0\']; ?>" alt="<?php the_title(); ?>" /></a>
                       </div>

                 <?php } ?>

                       <h6><a href="<?php the_permalink(); ?>"><span><?php the_title(); ?></span></a><br><i class="icon-time muted"></i> <?php echo get_the_time(\'j\') . \'/\' . get_the_time(\'m\') . \'/\' . get_the_time(\'Y\') . \' \'; ?> <i class="icon-comments muted"></i> <a href="<?php the_permalink(); ?>"> <?php comments_number(0 . __(\' comments\',\'textdomain\'), 1 . __(\' comment\',\'textdomain\'), \'% \' . __(\'comments\',\'textdomain\')); ?></a></h6>

               </div>

    <?php }
    wp_reset_postdata();
}

<?php
if ( have_posts() ) {
    while ( have_posts() ) {
        the_post();
        //some content goes here regarding the post itself!!!
        //some content goes here regarding the post itself!!!
        the_latest_author_posts($post);
    }
}
?>