A cooking device is described. The cooking device includes a main body. The cooking device includes a ventilation apparatus that is located at a lower side of the main body, that is configured to suck air into the main body, and that is configured to discharge air from the main body. The ventilation apparatus includes a base that is connected to the lower side of the main body and that includes an introduction port. The ventilation apparatus includes a swirler that is configured to generate suction by rotating air around the introduction port of the base and that includes a plurality of wings. The ventilation apparatus includes a driving unit that is configured to rotate the swirler. The ventilation apparatus includes a swirler guide that is configured to cover an underside of the swirler and that is configured to guide a flow of air around a center of the swirler.