Zn and Zn-Al coatings were prepared by high velocity arc spray on the 16MnR steel. The corrosion resistance was studied by salt spray test in 5% NaCl aqueous solution. The micro-structure and phase compositions of the fore-and-aft corrosion were investigated. The results show that the two coatings are compact. Red rust is not seen on the surface of the two coatings after the salt spray test for 40 d. Both Zn and Zn-Al coatings show excellent corrosion resistance. The corrosion products of Zn coating is loose. Zinc coating plays a sacrificial anode role. Contrarily, the corrosion products of Zn-Al coating is compact. Zn-Al coatings play a sacrificial anode and the isolation of dual roles.