The utility model relates to a laser field of restoreing. The utility model provides a device for preparing fused quartz optical element surface damage for artificially prepare out fused quartz optical element's surface damage, for its reparative process of research, its technical scheme can briefly be: a device for preparing fused quartz optical element surface damage, its characterized in that is including optic platform, two -dimensional translation table, diamond tucking, counter weight device, microscope and strutting arrangement. The beneficial effects of the utility model are that: it is simple and convenient, be applicable to the artificial surface damage who prepares out fused quartz optical element.