Hot-water heating mattress

The water heated mattress relates to an improvement in the mattress structure. The utility model provides a water heated mattress which is able to be heated without direct connection with a chimney, aiming to overcome the disadvantages of the present mattresses that the present mattresses are not able to be heated and the fire resist is directly connected with the chimney. The utlity model includes an enclosed tank body(9) which consists of an upper surface(8), a bottom(7) and a side wall(6) with a water inlet pipe(2) and a water outlet pipe(1) arranged beside the enclosed tank body(9) whose inside provided with a strengthening rib(5) and water(3).