循环开始使用前query_posts.可获得的parameters are here.类似这样：

global $wp_query;
query_posts( array( 
                    \'post_type\' => \'mycustomname\', 
                    \'tax_query\' => array( 
                                           \'relation\' => \'AND\', 
                                           array( 
                                                  \'taxonomy\' => \'mytaxonomyname\', 
                                                  \'field\' => \'slug\',
                                                  \'terms\' => array( 
                                                                    \'myterm1slug\',
                                                                    \'myterm2slug\' 
                                                                   ) 
                                                ) 
                                        ) 
                  ) 
);