PURPOSE: An oven cooking device is provided to prevent the flow of combustion gas around flue holes or discharge holes from being collided or overlapped by alternately arranging the flue holes and the discharge holes of the combustion gas in the edge of the lower end of a cooking room not to be overlapped. CONSTITUTION: A plurality of combustion gas flue holes (9) between a combustion gas distributing room and a cooking room and a plurality of combustion gas discharge holes (10) between the cooking room and the outside of a cooking device are alternately formed to the edge of the lower end of the cooking room. The flue holes are formed at a separation unit of the edge of a cooking device support unit (6) and the edge of a combustion gas distributing unit (5). The discharge holes are formed to one among a part in which the edge of the cooking device support unit and the edge of the combustion gas distributing unit, the edge of the cooking device support unit, or the edge of the lower end of the cooking room. The combustion gas flowing in the combustion gas distributing unit by passing through a combustion gas inlet of the cooking device support unit passes through the flue holes and flows in the inside. The combustion gas around the flue holes and the discharge holes are not overlapped and smoothly flow in a discharge process to the outside of the cooking device through a convection process.
