Access system for M2M service in cellular wireless communication system

The invention discloses an access system for M2M service in a cellular wireless communication system. The access system comprises a deployed cellular mobile communication network, a deployed base station and a deployed M2M service server, and is characterized in that the access system further comprises an MTC device with a dual-mode communication mode and an M2M service convergence access node with an access point function and a cellular network access function; the MTC device can directly communicate with the cellular network base station or the M2M service convergence access node; when the MTC device can not communicate with the M2M service convergence access node or the MTC device must directly communicate with the cellular network base station, the MTC device directly initiates connection with the base station through a cellular network protocol stack and a radio frequency module and sends up data. When the MTC device is configured to communicate with the M2M service convergence access node, the MTC device sends the M2M service to the M2M service convergence access node through the air interface technology between the MTC device and the M2M service convergence access node.