您只需要两个步骤：

加入行动admin_menu, 使用回调函数注册页面以打印内容plugin_dir_path( __FILE__ ) . "included.html".

add_action( \'admin_menu\', \'wpse_91693_register\' );

function wpse_91693_register()
{
    add_menu_page(
        \'Include Text\',     // page title
        \'Include Text\',     // menu title
        \'manage_options\',   // capability
        \'include-text\',     // menu slug
        \'wpse_91693_render\' // callback function
    );
}
function wpse_91693_render()
{
    global $title;

    print \'<div class="wrap">\';
    print "<h1>$title</h1>";

    $file = plugin_dir_path( __FILE__ ) . "included.html";

    if ( file_exists( $file ) )
        require $file;

    print "<p class=\'description\'>Included from <code>$file</code></p>";

    print \'</div>\';
}