Water circulation cooling and heating seat cushion and water circulation cooling and heating mattress

The utility model relates to a water circulation cooling and heating seat cushion and a water circulation cooling and heating mattress, which comprise a machine shell, a water tank cover, a base plate, a heat exchange water tank, a water pump, a semiconductor chilling plate, a cold/heat dissipation device, a fan, a control panel and a seat cushion or mattress with a heat exchange water path, and the machine shell comprises an air inlet control cavity, a cold/heat dissipation cavity, a device cavity, a circulating water cavity and a water adding and storage tank. The circulating water cavity is adjacent to and communicated with the water adding and storing tank; the semiconductor chilling plate is arranged in the device cavity, the heat exchange water tank is attached to the semiconductor chilling plate, the fan is matched with the cold/heat dissipation device and arranged in the cold/heat dissipation cavity, and the cold/heat dissipation device is attached to the semiconductor chilling plate; the water tank c