The invention provides a pressure cooker which comprises a cooker body and a cooker cover. An exhausting hole and a pressure relief valve are arranged on the cooker cover, and the pressure relief valve is arranged on the exhausting hole. The pressure cooker is also provided with a pressure relief driving device for driving at least part of pressure relief valve to break away from the exhausting hole, a switch device for controlling the pressure relief driving device and a switch reset device capable of switching from a closed state to an opened state. By arranging the pressure relief driving device, the switch device and the switch reset device, a pressure relief function can be achieved by shifting the switch device in the using process of a user, resetting of the switch device can be also automatically achieved in the uncovering process, and the user is prevented from forgetting opening the switch device.