正如我所说的，你需要给correct 您的tax_query 因为我不知道你的确切设置。这个terms 参数（默认情况下）应该是一个整数值或术语ID的整数值数组，所以要考虑到这一点

让我们以代码为例

$wsubcats = get_categories($wsubargs);
    foreach ($wsubcats as $wsc):

您的taxonomy 值将为$wsc->taxonomy

您的terms 值将为(int) $wsc->term_id

编辑2

筛选代码时，会出现大量错误。我已经更正了您代码中的所有错误，并在代码中对它们发表了评论，所以请务必检查我的评论。在我声明要删除的地方，请删除该特定代码行，因为它不是必需的。此外，我不知道您是否真的需要空术语，所以我保留了它，只需内置保护，以避免在实际存在空术语时出现错误和错误

<?php
$taxonomy = \'menu-items\'; // Do not use hypens in taxonomy names, only use underscores
$term_args = array(
    \'hide_empty\' => 0, // Why do you need empty terms? 
    \'orderby\' => \'ASC\',  
    \'parent\' => 0
);
$wcatTerms = get_terms(
    $taxonomy, // Taxonomy name
    $term_args // Array of arguments to get terms by
);
// To avoid bugs and errors, run this only if we have a valid array of terms
if (    !empty( $wcatTerms ) // Check that we do not have an empty array 
     && !is_wp_error( $wcatTerms ) // Check that we do not have a WP_Error object returned
) { 
    // If our conditional check passed, then only run the following code
    foreach($wcatTerms as $wcatTerm) { // Do not use : as it is hard to debug and to read, use old style curlies
        //echo $wcatTerm->name;
        $wsubargs = array(
            //\'hierarchical\'=>1, // This is default, not needed and can be removed
            //\'show_option_none\'=>\'\', // Invalid parameter, where do you get this from, to remove
            \'hide_empty\'=> 0, // Why do you need empty terms?
            \'parent\'=>$wcatTerm->term_id,
        );
        //$wsubcats = get_categories($wsubargs); // Why use get_categories, get_categories uses get_terms, to remove
        $wsubcats = get_terms( 
            $taxonomy, // We have set this earlier
            $wsubargs
        );
        foreach ( $wsubcats as $wsc ) { // Again, do not use : as it is hard to debug
            ?><h2><?php //echo $wsc->name; ?></h2>
            <?php $childcat = $wsc->name; ?>
            <h2><?php echo $childcat; ?></h2>
            <?php 
               //$posts = get_posts(array( // Do not mess with $posts global, rather use $posts_array, to remove
            $args = array(
                \'post_type\' => \'menu\', // Really bad name, reserved name in Wordpress
                \'orderby\' => \'name\',
                \'order\' =>  \'DESC\',
                \'tax_query\' => array(
                    array(
                        \'taxonomy\' => $taxonomy, // We have defined this already right at the start
                        \'terms  => $wsc->term_id,
                        \'include_children\' => false,
                    )
                ),
                \'nopaging\' => true,
            );
            $posts_array = get_posts( $args );

            // You are missing the loop here, that is why you are getting the same stuff over and over again
            if ( $posts_array ) { // Only run this if we actually have posts, if we do not have posts, we will have bugs and errors
                foreach ( $posts_array as $post ) { // You were missing this
                    setup_postdata( $post ); // VERY VERY IMPORTANT, without this, the template tags like the_content will not work
                    ?>
                             <div class="menu-title"><?php the_title(); ?></div>
                             <div class="menu-title"><?php the_content(); ?></div>

                <?php } // endforeach $posts_array
                wp_reset_postdata(); // VERY IMPORTANT to reset the $post global to main query
            } // endif $posts_array
        } // endforeach $wsubcats
    } // endforeach $wcatTerms
} // endif check for valid array of terms
?>