The present application discloses a communication method and an apparatus. The method includes: obtaining, by a terminal device, information about an access technology corresponding to a first service; receiving, by the terminal device, information about an access technology and resource information corresponding to the access technology that are broadcast by a network device; determining, by the terminal device based on the obtained information about the access technology corresponding to the first service, and the information about the access technology and the resource information corresponding to the access technology that are broadcast by the network device, a first resource corresponding to the first service; and sending, by the terminal device, an access request to the network device by using the first resource.