Abstract: An automatic broadcasting channel setting system and the method thereof for setting automatically a G-code channel, which is different according to respective districts, to a plus channel. Using G-code channel data according to respective districts which is provided as a data base, a G-code channel having the best receiving sensibility is set among the broadcasting channels being received, and the set G-code channel is set, or mapped, to a plus channel. According to an embodiment of the present invention, the automatically set channel data is backed-up to and stored in a separate device, and used in automatic channel setting of another image device in which channel setting is not performed.