This patent application discloses a radio access network slice generation method, a radio access network, and a slice manager. The method includes: receiving, by a radio access network, a radio access network slice generation request message sent by a slice manager; and generating, by the radio access network, a radio access network slice. The radio access network slice generation request message includes information about a service type, and a protocol stack corresponding to the service type is configured for the radio access network slice. In this patent application, there is no need to repeatedly deploy different radio access networks to meet different service types, and therefore operating expenses are reduced. The radio access network slice may be quickly generated, and this facilitates rapid deployment of a new service.