Through the experiment,to choose the metal corrosion inhibitor of the methanol gasoline,and the corrosion mechanism is discussed. Through the single factor experiment,to select single corrosion inhibitor,and the single corrosion inhibitors were used to prepare the compound corrosion inhibitor. When test solution pH = 3,bath temperature T = 40℃,compound corrosion inhibitor content is 200 mg / L,the corrosion inhibitor has a very good effect on the metal specimens,industrial corrosion rate can reach 80%. The prepared metal corrosion inhibitor has a very good effect on the metal specimens.