PURPOSE: To make it possible to completely remove foreign matter stuck to the outer surface of a disc member, by providing a cleaning member for cleaning the disc member chucked by a chuck member, and by providing a supply member for feeding cleaning liquid.

CONSTITUTION: Cleaning liquid is fed into cleaning tools 28a, 28b through hoses 34a, 34b while they are driven for rotation by means of a motor or the like through the intermediary of a rotary shaft 30, a pulley 31, belts 32a, 32b pulleys 29a, 29b and rotary shafts 27a. 27b. Thereby, the outer surface of the disc member 9 is rubbed so that the front and back surfaces of the disc member 9 are cleaned with its entirety. At this time, foreign matters such as abrasion powder or the like residing between the cleaning tools 28a, 28b and the disc member 9, may be smoothly discharged to the outside since he cleaning tools 28a, 28b are rotated during cleaning, thereby no uncleaned part remains after cleaning so that it is possible to provide a complete cleaning process.