Laser cleaning device

The utility model relates to a laser cleaning device which comprises a shell, a light path assembly and a laser output head. The light path assembly is arranged at one end of the shell and comprises a reflector, a galvanometer and a zoom field lens. The laser output head is arranged in the shell and comprises an output end, the output end faces the light path assembly, a laser beam output by the output end is reflected to the galvanometer through the reflector, and the galvanometer is used for changing the transmission direction of the laser beam so that the laser beam can be focused on the surface of a workpiece through the zoom field lens. In the cleaning process, due to the fact that the galvanometer vibrates and is matched with the focusing effect of the zoom field lens, a row of dense light spot sets can be formed on the focusing face of the zoom field lens, and the cleaning effect is improved. And moreover, the focal length is adjusted by adjusting the zoom field lens, workpieces at different distances