Do not use query_posts()!. 滤器pre_get_posts 相反*。

<?php
function wpse59617_filter_pre_get_posts( $query ) {
    // Only modify the main query
    if ( ! $query->is_main_query() ) { return $query; }
    // Get the ID of the post to exclude
    $slug = \'some-post-slug\';
    $post_id = url_to_postid( $slug );
    // Modify the query
    $query->set( \'category_name\', \'Mycat\' );
    $query->set( \'post__not_in\', $post_id );
    $query->set( \'posts_per_page\', \'-1\' );
    // Return the modified query
    return $query;    
}
add_filter( \'pre_get_posts\', \'wpse59617_filter_pre_get_posts\' );
?>