The invention provides an anti-corrosion cable material based on epoxy resin and a preparation method thereof. An anti-corrosion component containing epoxy resin is specially added on the basis of anexisting cable recipe, the anti-corrosion component is prepared from an anti-corrosion component A and an anti-corrosion component B, wherein the anti-corrosion component A is prepared from epoxy resin with the molecular weight being 190-600, titanium dioxide powder with the grain size being 500-800 meshes, a nanometer assistant containing silicon, an anti-settling agent and an organic solvent supplementary element, and the cable material is prepared. The cable material has the excellent anti-corrosion function, cables can be used to work in an acid environment or an alkali environment, the transmission effect of the cables is improved, the situation that signals are often lost in the transmission process of the cables is avoided, so that the using effect of the cables is greatly improved,the service life of the cables is prolonged greatly, and the transmission stability of the cables is improved.