Aiming at problems of poor quality of the surface of the stainless steel container and easily contaminated products for the chemical, pharmaceutical, food and other industries, a simple, lightweight, small diameter stainless steel drums polishing device of the inner wall of the container was designed and developed. After polishing by the device, the oxide layer within the keg inner wall surface could be removed, and the value of the surface roughness reduced. It solves the technical problems in the traditional process, and is obviously practical significance to improve the product quality.