The present invention relates to a wireless communication system and, more particularly, to a method and apparatus for changing services in a direct communication system. A method for setting up a session in a first wireless device supporting a Wi-Fi direct service, according to one embodiment of the present invention, can include the steps of: setting up a connection between a first wireless device and a second wireless device, which includes a provision discovery process between the first wireless device and the second wireless device for creating a session for a first service; and transmitting a request_session message from the first wireless device to the second wireless device for creating a session for a second service. Session information for the second service can be included in the request_session message.