The invention discloses graphene anticorrosive paint and a preparation method thereof. The graphene anticorrosive paint is prepared from graphene, zinc silicate, talcum powder, hexafluorobutyl methacrylate-acrylic ester copolymer emulsion, organosilicone modification fluorocarbon resin, hydroxyethyl cellulose, acrylic acid, 2, 4, 6-tri(dimethyl aminomethyl) phenol, dibutyltin dilaurate, styrene-acrylic emulsion, sodium triphosphate, gaseous phase aluminum oxide, alumina silicate fibers, isopropyl phenyl diphenyl phosphate, ammonium carbonate, titanium dioxide, toughening agents, coagulating agents, thinning agents, iron powder and silica sol, and the graphene anticorrosive paint is prepared out through a step-by-step mixing method. The graphene anticorrosive paint is corrosion-resistant, abrasion-resistant, capable of absorbing heat and applicable to outdoor equipment of an electric power grid.