Abstract: A steam-cleaning appliance of the invention comprises a housing in which a water storage chamber, a pump, and a steam device are mounted. The pump pumps cold water from the water storage chamber and delivers cold water to the steam device. The steam device includes a water-flowing path and a heating unit that heats water flowing through the water-flowing path. Cold water pumped by the pump penetrates into the water-flowing path via a water inlet to be heated. The increasingly heated water is sputtered into steam through a steam pipe to a nozzle of the steam-cleaning appliance.