An enclosure structure of a sink-type washing machine, comprising an enclosure forming a washing space. The enclosure comprises a sink main body (1). A partially depressed area is provided at the bottom of the sink main body (1). Also, a heating component (6) is arranged in the partially depressed area. Because the flatbed-type heating component (6) is arranged in the partially depressed area, the need for installing an additional drinking water apparatus is obviated, the structure is simplified, and cleaning of the heating component (6) is facilitated.