Fuente: Wipo "IOT" The embodiment of the invention provides an access method, equipment and a system, which are applied to the field of communication, realize that the access of an IOT gateway has no requirement on theversion of the IOT gateway, and save IOT cloud platform resources. According to the specific scheme, the method comprises the steps that UE installed with an MAPP and an IOT gateway to be connected are connected to the same local area network, and the UE obtains the address of the IOT gateway to be connected; the IOT cloud platform distributes a unique access identifier corresponding to the MAPP to the MAPP in the UE; the UE provides the address of the IOT cloud platform and the distributed access identifier for the IOT gateway with the known address; and the IOT gateway includes the access identifier in the registration message and sends the registration message to the IOT cloud platform, and the IOT cloud platform binds the IOT gateway sending the registration message with the MAPP corresponding to the access identifier included in the registration message to complete the access of the IOT gateway. The method and the device are used for IOT gateway access.