A method is disclosed for updating communication equipment through a server in a communication system, wherein the server stores the updated files used for updating the communication equipment. In this method, configuration data in the communication equipment are backed up in the server at first, the updated files are downloaded to the communication equipment from the server, the updated files are loaded to the communication equipment to implement the communication equipment update, and the configuration data backed up in the server are recovered to the communication equipment. The present invention can guarantee the successful update of the communication equipment and no data loss after the update, thus the security of the communication equipment update is greatly improved.