Casing side polishing device

A casing side polishing device comprises a carrier and a polishing mechanism. The carrier comprises a rotating table, a horizontal moving device and a product carrying device which are arranged from bottom to top. The polishing mechanism comprises a polishing arm and a polishing disc installed at the front end of the polishing arm, and the polishing disc and the product carrying device are located at the same height. By means of the device, polishing of the side and the side circular bead of a casing can be conducted coherently, the side burs and the edge chamfer can be processed, product damage is reduced by means of a buffer mechanism, and the service life of the device is prolonged.