Hydrochloric acid and hydrofluoric acid soil mixture asit is in the acidification of construction is widely used varietiesof one soil acid-based corrosion inhibitor used in constructionmust comply with the characteristics of acid soil, one is due tohydrofluoric acid the role of the different dispersion andhydrochloric acid, easy to produce precipitation or layered; twokinds of protection of steel is not obvious, the reaction inhibitorwere formed lumps. separated from the liquids; three are corrosionInhibitor mechanism is different from pure hydrochloric acid orhydrofluoric acid. these characteristics, determine itsspecificity, and therefore on this basis, we developed a soilacid-based inhibitor.