The present invention relates to the field of antibacterial and anticorrosion coating products, in particular to a graphene-modified antibacterial and anticorrosion coating. The raw materials of the antibacterial and anticorrosion coating include: 30-50 parts of epoxy resin, modified diatomite 15-35 parts, 0.5-10 parts of graphene material, 0.5-1 part of nano-silver particles, 8-20 parts of filler, 1.5-6 parts of additives, 13-15 parts of nano-silver copper loaded POSS base resin and 16-25 parts of water share. A kind of graphene modified antibacterial anticorrosion coating prepared by the present invention can solve the actual problems in the field of antibacterial anticorrosion of ships, marine equipment, granaries, etc., has good economic benefits, saves energy materials; in steel structures, metal plates, etc. On the one hand, it has excellent adhesion, good wear resistance, can withstand high and low temperature, high salinity, can well tolerate bacterial corrosion, and achieve antibacterial and antiseptic effects.