The embodiment of the invention provides a cooking device comprising a shell, an upper cover hinged with the upper end part of the shell, a heat insulating inner cylinder fixedly arranged in the shell, a cooking pot arranged in the heat insulating inner cylinder and a control device used for controlling the running of the cooking device, as well as a lower heating device positioned at the lower part of the cooking pot and fixedly arranged on an inner bottom surface of the heat insulating inner cylinder; an air inlet of an exhaust device is communicated with a cavity which is formed by the shell and the upper cover, and an air outlet thereof is communicated with the atmosphere and used for discharging waste gas in the cavity; a temperature control device is arranged at the bottom surface of the heat insulating inner cylinder and used for detecting the temperature of the cooking pot and sending temperature information to the control device so as to control a switch of the lower heating device; and the lower heating device, the exhaust device and the temperature control device are respectively electrically connected with the control device. In the cooking device, the lower heating device is used for heating food in the cooking pot, and the exhaust device is used for exhausting oil fume and water stream in the cavity of the cooking device, thus improving the quality of cooking food.