One embodiment of the present invention discloses a method and system for implementing concurrent access of multiple bearer protocols in a M2M platform. The method comprises: after receiving an uplink message of a terminal, an access module of a M2M platform determining a bearer type of the uplink message, obtaining corresponding key information of the bearer type, and packaging the key information and an original datagram of the uplink message into an internal message to send to a service module of the M2M platform; and after completing a service processing flow based on the internal message, the service module packaging datagram response contents and the key information into a downlink message to send to the access module, which sends the downlink message to a terminal corresponding to the downlink message based on the key information after receiving the downlink message.