Water tank and cleaning machine

The utility model relates to a water tank and a cleaning machine, the water tank comprises a tank body, the tank body comprises a surrounding edge and a vertical cylinder which are connected up and down, the surrounding edge comprises a horizontal part located at the top and a first vertical part connected below the horizontal part, the lower edge of the first vertical part is bent outwards and upwards to form a first turnup, and correspondingly, the first turnup is connected with the vertical cylinder. And a part of the vertical cylinder is sunken outwards to form a mounting groove for accommodating the first turned-over edge. The surrounding edge and the vertical cylinder which are relatively independent are connected in a splicing manner, so that the process difficulty of welding or drawing each part is reduced, the thickness of each part can be adjusted as required, materials are saved to the greatest extent, and the cost is reduced; by means of the connection mode that the first turned-over edge is wrapp