An embodiment of the present invention relates to a Wi-Fi display (WFD) service initiation method comprising the steps of: in a method for a first apparatus that supports WFD initiating a WFD service, the first apparatus transmitting a WFD discovery frame to a second apparatus; and the first apparatus transmitting a real-time streaming protocol (RTSP) M1 message, wherein the first apparatus transmits one of a provision discovery request or a session initiation request to the second apparatus before transmitting the M1 message if there is an internet protocol (IP) connection established between the first apparatus and the second apparatus when transmitting the WFD discovery frame.