SOLVED
我在另一篇帖子中找到了答案
@Gustav  对于任何像您这样寻找解决方案的人,都可以访问链接或查看下面的代码,它工作得非常好。
https://wordpress.stackexchange.com/questions/123059/list-post-from-current-taxonomy-childrenTHE WORKING CODE
        <?php 
    $term_slug = get_query_var( \'term\' );
    $taxonomyName = get_query_var( \'taxonomy\' );
    $current_term = get_term_by( \'slug\', $term_slug, $taxonomyName );
    $termchildren = get_term_children( $current_term->term_id, $taxonomyName );
    foreach ($termchildren as $child) {
    $term = get_term_by( \'id\', $child, $taxonomyName );
    $wpq = array (
    \'taxonomy\'=>$taxonomyName,
    \'term\'=>$term->slug,
    \'order\'=>\'asc\',
    \'orderby\'=>\'title\');
    $query = new WP_Query ($wpq);
    $taxonomy_img = get_term_meta( $term->term_id, \'tax-image\', true );
    //echo "$term->name:<br />"; 
    ?>
    <div class="row infor-row">
    <div class="container">
    <?php echo \'<h3 class="child-term">\'.$term->name.\'</h3>\'; ?>
    <div class="col-sm-12 menu-list">
    <?php if ($query->have_posts() ) : ?> 
    <?php while ($query->have_posts() ) : $query->the_post(); ?>
    <div class="col-sm-12 price-row col-md-6 clearfix">
    <div class="item-price"><?php if ($price = get_post_meta($post->ID,\'_marvilmedia_price\',true)): ?><?php echo \'$\'.$price; ?><?php endif; ?></div>
    <div class="item-info">
    <span><?php the_title(); ?></span><br/>
    <?php $terms_as_text = get_the_term_list( $post->ID,\'menu_side\', \'\', \', \'); if (!empty($terms_as_text)) echo \'\', strip_tags($terms_as_text) ,\'\'; ?>
    </div>
    </div> 
    <?php endwhile; ?> 
    <!--/table-->
    </div>
    </div>
    </div>
    <div class="row free-row" style="background-image: url(\'<?php echo $taxonomy_img; ?>\');">                 
    </div>
    <?php else :
    echo \'<h2>No Menu Item for \'.$term->name.\'</h2>\'; ?> 
    <?php endif;?>
    <?php wp_reset_query(); ?>
    <?php
    echo "";   
    }
    ?>