A method and system for a plurality of devices to share a channel map of digital broadcast in a home network is provided. In a system and method for sharing a channel map of digital broadcast in a home network according to the present invention, a Remote User Interface Server (RUIS) stores a channel map including an occupied count field for indicating a number of devices using each of a plurality of digital broadcast channels and an occupier indicator field including indicators of the devices using corresponding digital broadcast channels, and at least one Remote User Interface Client (RUIC) as one of the devices receives and displays the channels for which occupier indicator fields include the occupier indicator of the RUIC.