The invention discloses a graphene anticorrosive intermediate paint preparation method and a graphene anticorrosive intermediate paint. The graphene anticorrosive intermediate paint preparation methodincludes the following steps: S1, a preparation device of the graphene anticorrosive intermediate paint is used for production, and a material A is produced in a first manufacturing cavity; and the first manufacturing cavity and a second manufacturing cavity are isolated mutually; S2, a material B is produced in the second manufacturing cavity, and the first manufacturing cavity and the second manufacturing cavity are isolated mutually; and S3, a first solenoid valve between the first manufacturing cavity and the second manufacturing cavity is opened, so that the object inside the first manufacturing cavity flows into the second manufacturing cavity, and the material A and the material B are mixed in a proportion of 5:1. The graphene anticorrosive intermediate paint has the advantages ofeasy production, low cost, long service life, corrosion resistance and strong adhesion powder.