The invention relates to a preparation method of a particle-enhanced organic anticorrosive coating on the surface of a neodymium-iron-boron permanent magnet material, and specifically relates to a cathode electrophoresis coating method of the particle-enhanced organic anticorrosive coating on the surface of the neodymium-iron-boron permanent magnet material. According to the invention, first, the surface of the neodymium-iron-boron permanent magnet material is polished; the surface of the neodymium-iron-boron permanent magnet material is subject to degreasing, rust removing by acid cleaning, surface phosphorizing, cathode electrophoresis coating and high-temperature curing, such that a particle-enhanced organic matter coating is formed on the surface of the neodymium-iron-boron permanent magnet material. According to the coating provided by the invention, epoxy resin, acrylic acid and polyurethane are adopted as substrates; micro-nano titanium oxide particles, alumina particles, graphite particles, aluminum particles and the like are adopted as enhancing phases, such that a composite organic coating can be prepared. The coating causes no influence on the inherent magnetic performance of the magnet. The coating has a good bonding force with the magnet, and has a good caking property with bonding glue. The coating is also advantaged in uniform thickness, smooth surface, high corrosion resistance, and low preparation cost.