The invention discloses a preparation method of a super-hydrophobic insulator anticorrosive paint. The super-hydrophobic insulator anticorrosive paint is mainly prepared from the following componentsby mixing: 78-85 parts of organosilicon modified waterborne polyurethane emulsion, 32-45 parts of waterborne epoxy resin, 25-30 parts of nanoscale titanium dioxide, 22-30 parts of calcium sulfate, 45-50 parts of an emulsifier, 8-12 parts of dodecylbenzenesulfonic acid, 3-5 parts of dodecylamine, 6-9 parts of modified chitosan, 6-8 parts of nano carbon powder, 2-4 parts of sodium tripolyphosphate,8-10 parts of calcium lignosulfonate and 155-180 parts of deionized water. The anticorrosive paint disclosed by the invention has the advantages of good low-temperature storage stability, good compatibility among raw materials, no obstacle in scraping in a construction process, smooth coating layer, high drying speed, high bonding strength, good construction property, convenience and rapidness, nobad conditions of cracks, pit points and the like, good flexibility, no cracks, strong hydrophobic heat preservation capacity, good temperature resistance, flame retardance and weather resistance.