The invention discloses a license control method and a license control system. The license control method includes: the license control system configures a shared license value of a license shared group, wherein the license shared group comprises one or more license object systems; each license object system initiates a license authentication request to the license control system according to service operation initiated by a user; and the license control system judges whether the license authentication request of each license object system is legal or not according to the shared license value of the license shared group of each license object system and returns a license authentication result to a license object. Compared with the prior art, the license control method and the license control system achieve dynamic sharing of multiple application systems, have the advantages of security, high efficiency, separation of license consumption from management and the like, and have particularly evident advantages in a telecommunication network management system.