The present disclosure relates to a pre-5th-Generation (5G) or 5G communication system to be provided for supporting higher data rates Beyond 4th-Generation (4G) communication system such as Long Term Evolution (LTE).A method by which a master device provided by one embodiment of the present invention controls mirroring services between the master device and a slave device comprises the steps of: storing information related to first connection mode mirroring when a termination event of mirroring connected in a first connection mode has occurred; and setting mirroring in a second connection mode by using the stored mirroring-related information.