The invention discloses a ship anti-pollution method. The ship anti-pollution method comprises the following steps of surface pretreatment of a steel plate, sanding treatment of a substrate, defect repair and sand blasting of welding seams and other structures, spraying of a primer, spraying of a reinforced paint, and subsequent servicing. Before coating, the surface of the steel plate is pretreated; during integral coating, the bottom part of a ship is sprayed with bionic marine anti-pollution coating, the coating contains a pure natural biological anti-pollution agent, the aversion function on marine organisms is realized, the adhesion force of the marine organisms is damaged, the pollution preventing purpose is realized, any poisonous influence on the marine environment is avoided, any damage on the marine organisms is avoided, and the coating is pure natural and is free from public nuisance; the adhesion force, anti-corrosive and strain-proof properties are excellent, the requirements of semi-gloss and matte of an anti-rust paint of a ship cabin are met, the spraying for multiple times is easy, the easiness in volatizing of moisture is avoided, the adhesion capability is higher, and the flash rust is avoided; the process flow is short, and the produced ship has excellent anti-pollution, anti-corrosive and anti-rust properties.