Embodiments of this disclosure relate to the communications field, and provide a multicast method and apparatus, to transmit multicast data in a wireless network. An example method includes: receiving, by a multicast function network element, multicast data from a multicast source and that includes a multicast address; obtaining, by the multicast function network element based on a preset correspondence, terminal information or connection information that corresponds to the multicast address; and sending, by the multicast function network element, the multicast data to a terminal.