The invention relates to a cold and hot display cabinet which comprises a refrigeration module and a heating module. A glass box assembly is arranged between the refrigeration module and the heating module; the heating module comprises an insulation layer, a heating device and a heat transfer device, the heating device is installed below the insulation layer, and the heat transfer device is fixedly connected in the gap between the insulation layer and the heating device; the refrigeration module comprises a base, a refrigeration device and an air supply device, the refrigeration device is fixedly connected to the upper side of the base, and the air supply device is fixedly connected in the refrigeration device; an automatic cleaning device is arranged on the side face of the refrigerationdevice. The cold and hot display cabinet is simple in structure and convenient to operate, and solves the problems that an existing display cabinet is monotonous in function and a refrigeration cabinet fails in refrigeration due to dust accumulation easily caused when a condenser is not cleaned frequently, and meanwhile a return door device is simplified and can be integrated with the automatic cleaning device.