要从搜索中删除元素，请使用post\\u search筛选器修改搜索的SQL查询，例如仅拉入标题。

function ni_search_by_title_only( $search, &$wp_query ){
 global $wpdb;
 if ( empty( $search ) )
  return $search;
 $q = $wp_query->query_vars;
 $n = ! empty( $q[\'exact\'] ) ? \'\' : \'%\';
 $search =
 $searchand = \'\';
 foreach ( (array) $q[\'search_terms\'] as $term ) {
  $term = esc_sql( like_escape( $term ) );
  $search .= "{$searchand}($wpdb->posts.post_title LIKE \'{$n}{$term}{$n}\')";
  $searchand = \' AND \';
 }
 if ( ! empty( $search ) ) {
  $search = " AND ({$search}) ";
  if ( ! is_user_logged_in() )
   $search .= " AND ($wpdb->posts.post_password = \'\') ";
 }
 return $search;
}
add_filter( \'posts_search\', \'ni_search_by_title_only\', 500, 2 );

就我个人而言，我更喜欢这个插件，因为它可以让我完全控制搜索中需要的每个字段，我使用的是relevanssi. 它应该很容易做到你想要的。