Epoxy resin (EP) was compounded with cardanol modified phenalkamine curing agent and graphene was doped into epoxy resin to prepare anticorrosive coating. The prepared anticorrosive coating was coated on the substrate tinplate to obtain a coating possessing both excellent mechanical properties and corrosion resistance. The surface morphology, curing time, gloss, adhesion, impact resistance, hardness, flexibility and corrosion resistance of the coating were tested. The results showed that the cardanol modified phenalkamine can achieve the excellent mechanical properties and corrosion resistance of the traditional low-grade fatty amine curing agent, and with the increase of graphene content, the coating anticorrosion performance was improved accordingly. The prepared coating containing 25% cardanol modified phenalkamine and 6% graphene paste exhibited the best performance, the average thickness of the coating is 120±10μm, the hardness is 2H, the adhesion is 1 level, the corrosion current density is 8.482×10-6 A/cm2 and the corrosion rate is 6.593×10-2 mm/year.