Abstract: The corrosion resistance of the zincification layer of the anchor chain steel under service conditions is comprehensively analyzed from the macroscopic behavior and microscopic morphology by means of electrochemical test, real sea test and salt spray test. The results show that the zinc nickel infiltrated coating doesn’t corrode in the tidal range, full immersion and atmospheric environments for 12 months. The zinc nickel coating withstands the salt spray test for 500 h and show good corrosion resistance. Zincification and passivation can reduce the corrosion rate and protect the metal matrix.