The present invention relates to a method and an apparatus for managing network sharing, where the method includes: acquiring, by an access network element, information about occupation of a resource of an access network element by a network sharing party; and reporting, by the access network element, the occupation information to a core network device, where the occupation information is used by the core network device to charge a user equipment UE that accesses the access network element. By acquiring and reporting information about occupation of a resource of an access network element by a network sharing party, the present invention enables a core network device such as a charging system to perform accurate charging according to the information about occupation of the resource of the access network element by the network sharing party.