In this experiment,the protective effect of different materials on concrete were studied,the alkalinity resistance of silicone penetrant,epoxy coating,acrylic coating and its influence on the adhesion of concrete were investigated,and the solvent resistance of polysiloxane topcoat,propylene polyacrylic coating and elastic acrylic coating were studied.The results show that the organosiloxane permeable protective primer can penetrate into the concrete interior and play a reinforcing role,but it can not form a continuous protective film.The corrosive media can still penetrate into the concrete interior and cause the carbonization corrosion of concrete.Solvent based epoxy coating,acrylic coating on concrete can play a role in sealing protection,but sealing is too good,concrete internal pressure changes will lead to coating foam off,resulting in concrete corrosion carbonization;The waterborne elastic acrylic coating has an elongation of up to 800%at break.It still has a good sealing and protection effect on cracking caused by physical damage and chemical damage.It can achieve the balance of shielding and respiratory performance of the coating,and has excellent anti-corrosion performance of concrete.