In order to solve the optimization problem of process parameters for power generation machinery, an anticorrosive method based on the nanometer heavy-duty coating is proposed. In this method, the system and preparation process of new heavy-duty coating are used. The final formula and preparation process are preliminarily determined by the orthogonal experiment with the help of the existing technical means. The composition preparation of the heavy-duty coating for the special environment requirements of offshore wind power is investigated and verified by the experiments. The experimental results show that the wear resistance of the coating can be improved obviously by the wear test of 2%-3% of nanometer silica concentrate, and the wear quantity is only 33 mg. It is concluded that nanometer heavy-duty coatings can improve the anticorrosion degree greatly and improve the internal environment air-tightness and surface anticorrosion ability of the marine wind turbine.