The polishing machine is a power tool consisting of basic components such as a base, a throwing disc, a polishing fabric, a polishing cover and a cover. The motor is fixed to the base, and the taper sleeve for fixing the polishing disc is connected to the motor shaft by screws. The polishing fabric is fastened to the polishing disk by a ferrule, and after the motor is turned on by the switch on the base, the sample can be manually pressed to polish on the rotating polishing disk. The polishing liquid added during the polishing process can be poured into the square plate placed beside the polishing machine through a drain pipe in a plastic tray fixed to the base. The polishing cover and cover prevent dirt and other debris from falling on the polishing fabric when the machine is not in use, which affects the use effect.