The invention relates to a polishing machine, in particular to a cylinder metal raw material burr polishing machine. According to the provided cylinder metal raw material burr polishing machine, the labor for polishing cylinder metal raw material is replaced, the working efficiency is high, and hands can be prevented from being stabbed. According to the technical scheme, the cylinder metal raw material burr polishing machine comprises a supporting frame, a circular plate, a handle, a 7-shaped plate, a rotating shaft, a bearing seat, a sleeve, a movable rod, a fastening bolt, a circular block,a blocking block and the like; and the circular plate is fixedly connected to the top of the supporting frame, an annular groove with a guiding function is formed in the middle of the top of the circular plate, and two annular sliding blocks are slidably arranged in the annular sliding groove. According to the cylinder metal raw material burr polishing machine, by placing a cylinder raw material into a placing hole to be in contact with a polishing block, a driving motor is started, burrs of the cylinder metal raw material can be cleared, the condition that a person clears the burrs of the cylinder metal raw material with a file is not needed, the working efficiency is high, and the hands can be prevented from being stabbed.