The invention is a method that mobile communication return interface implements united information source access interaction, relating to the mobile communication field, especially mobile communication interface. And the method comprises the steps of: client end sends session request information and if succeeding, server end sends success information, and when confirming the session has been established, the client end and server end make session data exchange, and when communication is finished, closing the session; if rejecting or failing, the server end returns session error information and the client end resends session request information; the client end and server end adopt information-mode interface protocol. And the invention lets different types of mobile communication client ends each able to make information exchange in mobile communication by the above method.