In the cold winter area, coal is easy to freeze in the process of loading, unloading, staying and transportation, which affects turnover and production and causes certain economic losses. Coal enterprises usually use antifreeze for coal transportation to solve this problem. At present, the antifreeze for coal transportation usually contains chlorine, which is corrosive to some extent. Corrosion inhibitor is one of the indispensable additives in the antifreeze for coal transportation. The corrosion inhibition of cast iron, steel, aluminum, copper and other different metals should be considered comprehensively. In this study, different types of corrosion inhibitors were compared, and the inhibition effect on several metals was explored, which was instructive and referential to the actual production.