Abstract: A disk immersing and extracting mechanism is provided, which utilizes a floating-control means to control a disk, so as to prevent the disk from floating up or falling over in the rinse tank and to prevent liquid droplets from dripping from the floating-control means onto the disk to cause an undesired cleaning. In the present invention, a disk is immersed into a rinse tank by a disk holder, and then, the cleaned disk is extracted out of the rinse tank. The disk holder comprises a control bar on the upper side, and a disk support frame on the lower side that has a pair of tooth plates parallel to the control bar.