您可以使用$menu 全局变量。以下内容将完成您的目标

add_action( \'admin_menu\', \'my_plugin_edit_admin_menu\');
function my_plugin_edit_admin_menu() {
    global $menu, $submenu;
    foreach ($menu as $menuKey => $menuItem)
        if ($menuItem[0] == \'Products\')
            $menu[$menuKey][2] = \'https://google.com/\'; // wtv link you want

    // UPDATE:
    // remove the sub menu as well (note the GLOBAL var define above)
    $submenu[\'edit.php?post_type=product\'] = \'\'; 
    unset($submenu[\'edit.php?post_type=product\']);
}