The wind turbine foundation of an offshore wind farm (prototype test wind farm) adopts high pile bearing table steel pipe pile, adopts the layer of mineral grease coating anti-corrosion technology to protect the wave splash area and tidal range area of the steel pile of 3 fans, and the cow leg part of 12 fans is covered by layer of mineral grease protection, with a total protection area of 1200 square meters, and the protection effect has been praised by the construction and the owner.