A method for accessing a local network, wherein the method comprises: receiving (601, 701), by a local gateway of the local network, a user plane establishment request from a mobility management entity, MME, wherein the user plane establishment request comprises information about a user plane bearer to be established by the MME for a user equipment, UE, and that is from the local gateway to a gateway of a core network, the UE accesses the core network by using a base station, and the local gateway is a local gateway corresponding to the UE, the information about the user plane bearer is an IP address and an end point identifier of a tunnel assigned by the gateway of the core network; and establishing(602, 702), by the local gateway for the UE according to the user plane establishment request, a user plane bearer that is from the base station to the gateway of the core network, and that comprises the local gateway used as an intermediate node; when data used by the UE to access a network is received, determining, by the local gateway according to a destination IP address of the data used by the UE to access a network, whether the data used by the UE to access a network is the data used to access the local network; when determining that the data used by the UE to access a network is the data used to access the local network, routing, by the local gateway to the local network, the data used by the UE to access a network; or when determining that the data used by the UE to access a network is not the data used to access the local network, forwarding, by the local gateway to the gateway of the core network, the data used by the UE to access a network. receiving (601, 701), by a local gateway of the local network, a user plane establishment request from a mobility management entity, MME, wherein the user plane establishment request comprises information about a user plane bearer to be established by the MME for a user equipment, UE, and that is from the local gateway to a gateway of a core network, the UE accesses the core network by using a base station, and the local gateway is a local gateway corresponding to the UE, the information about the user plane bearer is an IP address and an end point identifier of a tunnel assigned by the gateway of the core network; and establishing(602, 702), by the local gateway for the UE according to the user plane establishment request, a user plane bearer that is from the base station to the gateway of the core network, and that comprises the local gateway used as an intermediate node; when data used by the UE to access a network is received, determining, by the local gateway according to a destination IP address of the data used by the UE to access a network, whether the data used by the UE to access a network is the data used to access the local network; when determining that the data used by the UE to access a network is the data used to access the local network, routing, by the local gateway to the local network, the data used by the UE to access a network; or when determining that the data used by the UE to access a network is not the data used to access the local network, forwarding, by the local gateway to the gateway of the core network, the data used by the UE to access a network.