A method for implementing an access to a Machine to Machine, M2M, core network through a radio access network, comprising: receiving, by a network element, an access request message carrying equipment identity indication information, wherein the access request message is initiated by terminal equipment; determining, by the network element, that the terminal equipment is M2M equipment according to the equipment identity indication information; and selecting, by the network element, a corresponding M2M core network for the terminal equipment to implement the access of the terminal equipment wherein the network element comprises a virtual gateway, V-GW, serving as a proxy server located between the radio access network and the core network and making a distinction between M2M devices accessing a M2M core network and Human to Human, H2H, devices accessing a H2H core network based on unique identification information; wherein the step of selecting, by the virtual gateway, the corresponding M2M core network for the terminal equipment to implement the access of the terminal equipment comprises: selecting, by the virtual gateway, a corresponding third core network address for the terminal equipment according to information of a preconfigured corresponding relationship between a terminal equipment identity and the M2M core network; and initiating, by the virtual gateway, an access request to the corresponding M2M core network according to the third core network address, wherein the step of determining, by the network element, that the terminal equipment is M2M equipment according to the equipment identity indication information comprises: the V-GW judges whether the equipment is M2M equipment or H2H equipment according to the information carried in the access request message, wherein if the equipment is an H2H equipment terminal, the V-GW selects a MME address of the H2H core network; and if the equipment is an M2M equipment terminal, the V-GW selects a M-MME address of the M2M core network. receiving, by a network element, an access request message carrying equipment identity indication information, wherein the access request message is initiated by terminal equipment; determining, by the network element, that the terminal equipment is M2M equipment according to the equipment identity indication information; and selecting, by the network element, a corresponding M2M core network for the terminal equipment to implement the access of the terminal equipment wherein the network element comprises a virtual gateway, V-GW, serving as a proxy server located between the radio access network and the core network and making a distinction between M2M devices accessing a M2M core network and Human to Human, H2H, devices accessing a H2H core network based on unique identification information; wherein the step of selecting, by the virtual gateway, the corresponding M2M core network for the terminal equipment to implement the access of the terminal equipment comprises: selecting, by the virtual gateway, a corresponding third core network address for the terminal equipment according to information of a preconfigured corresponding relationship between a terminal equipment identity and the M2M core network; and initiating, by the virtual gateway, an access request to the corresponding M2M core network according to the third core network address, wherein the step of determining, by the network element, that the terminal equipment is M2M equipment according to the equipment identity indication information comprises: the V-GW judges whether the equipment is M2M equipment or H2H equipment according to the information carried in the access request message, wherein if the equipment is an H2H equipment terminal, the V-GW selects a MME address of the H2H core network; and if the equipment is an M2M equipment terminal, the V-GW selects a M-MME address of the M2M core network.