您可以添加检查以查看当前页面是否为主页，如果是，则跳过添加页面标题。这将使最终代码如下所示：

<title><?php

global $page, $paged;

// Add the page title if not the front page
if ( is_front_page() ) {
        wp_title( \'|\', true, \'right\' );
}

// Add the blog name.
bloginfo( \'name\' );

// Add the blog description for the home/front page.
$site_description = get_bloginfo( \'description\', \'display\' );
if ( $site_description && ( is_home() || is_front_page() ) )
        echo " | $site_description";

// Add a page number if necessary:
if ( $paged >= 2 || $page >= 2 )
        echo \' | \' . sprintf( __( \'Page %s\', \'twentyeleven\' ), max( $paged, $page ) );

?></title>

<title><?php wp_title( \'|\', true, \'right\' ); ?></title>

function wpse_132052_wp_title( $title, $sep ) {
    global $paged, $page;

    // Add the blog name
    $title .= get_bloginfo( \'name\' );

    // Use the site name and description for the home/front page
    if ( is_home() || is_front_page() ) {
        $title = get_bloginfo( \'name\' );

        // Add the site description for the home/front page.
        $site_description = get_bloginfo( \'description\', \'display\' );
        if ( $site_description && (  ) ) {
                $title = "$title $sep $site_description";
        }
    }

    // Add a page number if necessary:
    if ( $paged >= 2 || $page >= 2  ) {
        echo \' | \' . sprintf( __( \'Page %s\', \'twentyeleven\' ), max( $paged, $page ) );
    }

    return $title;

}
add_filter( \'wp_title\', \'wpse_132052_wp_title\', 10, 2 );