A method for implementing separating the terminal service from the network comprises the steps of: configuring the network devices, and setting the network transmission paths of various levels of quality of service; the network terminals or user terminals setting corresponding service identifier respectively for the different service; the network edge devices mapping the service to the transmission path corresponding quality of service to be transmitted based on the service identifier. A communication network is used to implement the method, in which the service is mapped to the network transmission paths corresponding to the quality of service established by the network management system based on the service priority in the service identifier, and the network transmission paths of various levels of quality of service are chosen to transmit the service based on the requirement of the service.