Method for screen mirroring, and source device thereof

The screen mirroring method and a display apparatus thereof according starts. Source apparatus according to an embodiment of the present invention is a display unit that displays a first screen, the input unit receiving a selection of a first region on the first screen, when a mirroring service is performed, wherein the first region in the first screen, processing the first region except regions in the second region are independent and that the first screen that reflects the processed transmit image data corresponding to the control unit, and the first screen for controlling such that mirrored from the at least one sink device and a communication unit, when using mirroring service according to the user's intention can be used to flexibly change the display.