A keyboard and a method for manufacturing the keyboard using silicon rubber. The method for manufacturing the keyboard includes forming sheets from silicon rubber; forming the sheets into a top pad with keys integrally formed thereon and a bottom pad bonded to a bottom surface of the top pad; painting the keys through a silk-screen printing method; and bonding the top and bottom pads with silicon liquid rubber in a state where a flexible printed circuit board is interposed between the pads. The keyboard is configured such that the painted keys are arranged on a top surface of the top pad and the flexible printed circuit board is interposed between the top and bottom pads so that the flexible printed circuit board is electrically contacted to produce a desired sound from a speaker of a controller when a user strikes the keys.