The invention provides a cluster area management method of a server. Cluster area division is carried out according to a physical address of a server; a standby server is arranged in each cluster area; when too many servers have abnormal problems in the cluster areas, the standby servers are started to work as standby servers. Therefore, a phenomenon that too many servers in operation are occupiedto work as standby servers is avoided; the overall operating efficiency of the system is improved; and the optimal system need can be met in terms of performance and physical location.