Information transfer method and information transfer device

The present invention provides an information transmission method, comprising: when the source access network to a lower version of the access network, the source access network transmitting user information corresponding to a lower version Access Network to a target access network; when GTP version number is newer version of the access network, using the source access network between the source and target access network access network and the transmission target access network source access network corresponding user information. The present invention further provides an apparatus for implementing the method of information transmission. Using the information transmission method and apparatus of the present invention can be realized corresponding to the user information transfer.