The invention relates to a weather-proof anticorrosion self-stratified paint of fluorinated block acrylic ester-epoxy resin and a preparation method thereof. The paint comprises a component A and a component B, wherein the component A comprises the following components in parts by weight: 100 parts of epoxy resin, 10 to 30 parts of fluorinated block acrylate copolymer, 20 to 30 parts of pigment filler, 1 to 2 parts of dispersant and 60 to 80 parts of organic solvent I; and the component B comprises the following components in parts by weight: 30 to 80 parts of amide curing agent and 20 to 60 parts of organic solvent II. The paint has the beneficial effects that as fluorinated block acrylic ester has a lower surface tension than the epoxy resin, the fluorinated block acrylic ester is migrated to a surface, the epoxy resin precipitates to the bottom, and meanwhile, the block acrylic ester containing an epoxy group is curved with the epoxy resin, interlayer binding force is enhanced; and as a paint system can be spontaneously separated into two continuous coatings with different functions through coating at one time, coating efficiency is improved, the production cost is reduced, and the service life is prolonged.