We have carried out a demonstration project of multi-layer mineral grease anticorrosive coating on steel pipe piles in a 250,000-ton iron ore wharf located in a port area. According to the site investigation and the actual project, 9 steel piles (each pile pier has 1 vertical steel pile and 2 diagonal piles) located in the inner three piles were selected for the demonstration of coating corrosion repair project. The coating range is from low tide 0.30 m to the lower end of the support platform (+3.8 m), with a total corrosion area of about 150 m2.