Abstract:Through testing polarization curve,the anti-rust function of four kinds of 3,5-dibromo-2-(hydroxy)-benzaldehyde Schiff base made by ourselves in the simulation concrete solution had been studied.The results indicate that taurine Schiff base has the better anti-rust function than other 3,5-dibromo-2-hydroxy-benzaldehyde Schiff bases and amino acids in them,and has good coordination effect with sodium molybdate.Simultaneously,Schiff bases' anti-rust function on steel has been discussed.