The invention discloses a Web server cluster routing method. A cache server is arranged to generate and maintain a hot spot request record, and an analyzing server is utilized for generating and maintaining an ordinary request record and updating the hot spot request record according to the ordinary request record. When the request reaches, the cache server is used for carrying out matching in the hot spot request record, if a matching item is found out, the web request is forwarded to a recorded target response server, and if the matching item is not found out, the request is forwarded to the analyzing server to be analyzed and routed to the target response server. According to the Web server cluster routing method, the hot spot request and the ordinary request are processed in a distinguished mode, the requests are reasonably allocated, and the processing capacity and the responding speed for the hot spot request can be greatly improved. Meanwhile, the hot spot request record is updated, the validity is kept, and the method can adapt to the accessing environment with the variable load and the low determinacy. The method is suitable for routing management of the Web server cluster.