因此,您需要确保在管理菜单控制台中显示说明(在“屏幕选项”下拉列表中)

你的第一个菜单项应该是Face then Face再次作为它的孩子然后sub neu项目作为孩子.

希望这可以帮助！

在你的functions.PHP中

class Description_Walker extends Walker_Nav_Menu
{
    /**
     * Start the element output.
     *
     * @param  string $output Passed by reference. Used to append additional content.
     * @param  object $item   Menu item data object.
     * @param  int $depth     Depth of menu item. May be used for padding.
     * @param  array $args    Additional strings.
     * @return void
     */
     function display_element( $element,&$children_elements,$max_depth,$depth=0,$args,&$output )
{
    $id_field = $this->db_fields['id'];
    if ( is_object( $args[0] ) ) {
        $args[0]->has_children = ! empty( $children_elements[$element->$id_field] );
    }
    return parent::display_element( $element,$children_elements,$depth,$output );
}
function start_lvl( &$output,$args=array() ) {
    // depth dependent classes
    $indent = ( $depth > 0  ? str_repeat( "\t",$depth ) : '' ); // code indent
    $display_depth = ( $depth); // because it counts the first submenu as 0
    $classes = array('sub-menu');
    $class_names = implode( ' ',$classes );

    // build html
    $output .= "\n" . $indent . '<ul class="' . $class_names . '">' . "\n";
}
    function start_el(&$output,$item,$depth = 0,$args = array(),$current_object_id = 0)
    {

        $classes     = empty ( $item->classes ) ? array () : (array) $item->classes;

        $class_names = join(
            ' ',apply_filters(
                'nav_menu_css_class',array_filter( $classes ),$item
            )
        );

        if ($args->has_children && $depth == 0){
        ! empty ( $class_names )
            and $class_names = ' class="menu-parent-item"';
        }else if($depth == 1){
         ! empty ( $class_names )
            and $class_names = ' class="heading"';
        }else{
         ! empty ( $class_names )
            and $class_names = ' class="'. esc_attr( $class_names ) .'"';  
        }

        $output .= "<li id='menu-item-$item->ID' $class_names>" ;
        $attributes  = '';

        ! empty( $item->attr_title )
            and $attributes .= ' title="'  . esc_attr( $item->attr_title ) .'"';
        ! empty( $item->target )
            and $attributes .= ' target="' . esc_attr( $item->target     ) .'"';
        ! empty( $item->xfn )
            and $attributes .= ' rel="'    . esc_attr( $item->xfn        ) .'"';
        ! empty( $item->url )
            and $attributes .= ' href="'   . esc_attr( $item->url        ) .'"';

        // insert description for top level elements only
        // you may change this
        $description = ( ! empty ( $item->description ) and 0 == $depth )
            ? '<div class="menu-description">' . esc_attr( $item->description ) . '</div>' : '';

        $title = apply_filters( 'the_title',$item->title,$item->ID );
        if (  $depth == 0) {//top level items
         $item_output = $args->before.$title.'</li><ul class="sub-menu"><li class="menu-image-container"><div class="menu-image"></div>'.$description.'</li>';  
        }
        else if(  $depth == 1){
             $item_output = $args->before.$title.'</li>';
        }
        else{//everything else
        $item_output = $args->before
            . "<a $attributes>"
            . $args->link_before
            . $title
            . '</a> '
            . $args->link_after
            . $args->after;
        }
        // Since $output is called by reference we don't need to return anything.
        $output .= apply_filters(
            'walker_nav_menu_start_el',$item_output,$args
        );

    }
}

在标题中(或您的菜单所在的位置)

<nav id="main-menu" role="navigation"><?PHP wp_nav_menu( array('menu' => 'Main','container' => 'div','container_class' => 'menu-main-menu-container','menu_id' => 'menu-main-menu','walker' => new Description_Walker )); ?></nav>