The present disclosure relates to a cooking appliance. The cooking appliance includes: a housing provided therein with a cooking space surrounded by bottom, rear and both lateral surfaces of the housing, and having upper and front surfaces open; a door including a door upper surface part covering the upper surface of the housing and a door front surface part connected to a front side of the door upper surface part and covering the front surface of the housing, and swiveling with respect to a rear side of the door upper surface part to open and close the upper surface and the front surface of the housing; and a tray disposed in the cooking space, the cooking appliance, further comprising: a first heating part disposed at the door.