The surface de-rusting or polishing of wire rod and wire before drawing usually adopts a pickling process, which produces strong acid, strong corrosive pollutants, heavy metals, etc., which are harmful to the environment. Grinding with a wire rod sand belt polishing machine can provide a good method for de-rusting the surface of steel wire. It has no pollution to the environment during grinding, good surface quality, stable speed, and easy to achieve high-stability grinding and de-rusting.