The present invention is applied to the field of communication, and especially involves a method and device for accessing network. Said method comprises: the terminal gateway establishes short distance wireless connection with the terminal; said terminal gateway sends an accessing request of the terminal to the mobility management equipment; said terminal gateway receives IP address transmitted by said mobility management equipment MME; said terminal gateway accesses said terminal into the network using said IP address. The embodiment of present invention breaks the limitation of accessing only one terminal into network by one PDN.