Cover-type dishwasher, the whole machine is made of high quality stainless steel plate, durable. Rotary upper and lower spray arms can effectively spray the dishes at multiple angles, thereby ensuring the cleaning effect. The stainless steel filter device blocks food debris from entering the drainage channel during washing, effectively preventing water channel blockage. Deep-drawing water tank is corrosion-resistant. Water-immersed energy-saving boiler makes the water temperature more stable and the cleaning effect is more obvious. It is equipped with a water softening device to effectively prevent the formation of boiler water dirt.