This invention discloses a
surface cleaning device, belonging to the technical field of cleaning equipment. It includes a body and a floor
brush. The floor
brush comprises a
brush body with a suction port and a
clean water tank for supplying liquid, mounted on the brush body. A cleaning component is detachably installed on the front side of the brush body, and the suction port is located at the rear of the cleaning component. A
wastewater tank is provided on the body. The lower end of the body is pivotally connected to the rear of the brush body via a hinge
assembly. The front end of the
clean water tank extends forward and at least covers the cleaning component. The rear end of the
clean water tank extends backward and at least partially bypasses the hinge
assembly to connect with the brush body. At least a portion of the bottom wall of the clean water tank extends continuously and smoothly from left to right, penetrating the central axis of the brush. This design eliminates the need for a connecting
pipe, allowing complete drainage of the liquid in the clean water tank, increasing its capacity while simplifying its internal structure.