Abstract: Provided is a heating unit for an oven that does not employ conventional heat rays, lamps, and high frequency to cook food, but instead uses a ceramic heater and a heating element coated with ceramic to cook food, so that far-infrared radiation and anions are emitted during cooking to increase the taste of cooked food and allow food to be properly cooked without being burnt, thereby increasing the overall effectiveness of the oven. The heating unit includes a heating element, a controller, and a heat blocking plate. The heating element includes a ceramic heater that emits heat using supplied electrical power, and a heat radiating plate that radiates the heat emitted by the ceramic heater toward food. The heat blocking plate blocks the heat emitted by the ceramic heater from being conducted outside the oven.