Embodiments of the present disclosure provide a method for accessing a local network, and a related device, so that a user equipment can simultaneously access an operator network and a local network. The method includes: receiving, by a mobility management entity (MME), an access request of a user equipment (UE) that is sent by a base station, where the access request carries access information of the UE; determining, according to the access information of the UE, a first local gateway corresponding to the UE; and establishing, for the UE, a user plane bearer that is from the base station to a gateway of a core network and that includes the first local gateway used as an intermediate node.