A method for operating an electronic device according to an embodiment of the present invention includes: entering a content sharing mode capable of sharing content with a first electronic device; outputting first content shared with the first electronic device; entering a content sharing mode capable of sharing content with a second electronic device; determining the authority to decide a display layout, with respect to the second electronic device; transmitting display layout information to the second electronic device upon determining that the second electronic device has the authority to decide the display layout; and receiving, from the second electronic device, display layout determination information including information on output positions of content shared with the first and second electronic devices. Accordingly, it is possible to provide various optimized display layouts of a screen displaying content of connected electronic devices.