The invention provides a surface cleaning device for mechanical equipment. The device comprises a frame, a worktable surface fastened at the upper end of the frame, and a frame arranged at the upper end of the worktable surface; an adjustable treatment module and an equipment fixing module are arranged on the surface of the worktable surface; and the adjustable treatment module is positioned at the left end of the equipment fixing module. A first mobile module of the surface cleaning device for mechanical equipment enables a first slide plate to displace left and right through controlling a rocking handle; a pushing cylinder fixed on the first slide plate can control a second slide plate to displace left and right; through displacement control at two ends of the horizontal direction, the convenience and the adjustability of the device are greatly improved, and the horizontal displacement length of the surface treatment module can be increased; a second mobile module controls a driving motor to enable the surface treatment module to displace vertically; and the surface treatment module has the advantages of simple control and convenience in movement.