The invention provides magnetic anti-corrosion self-restoration paint and application thereof to oil-gas field casing pipe anti-corrosion. The magnetic anti-corrosion self-restoration paint comprises a bottom layer part, a self restoration part and a surface layer part, wherein the bottom layer part and the surface layer part are both prepared from ingredients A and ingredients B; the ingredients A are prepared from 40 to 70 parts of film forming substances, 40 to 70 parts of epoxy resin and 20 to 50 parts of organic solvents; the ingredients B are prepared from 50 to 80 parts of polyamide and 40 to 60 parts of organic solvents; the self restoration part is prepared from 10 to 20 parts of magnetic microcapsules and 70 to 80 parts of organic solvents; the film forming substances are condensates obtained after plant oil is heated at 180 to 200 DEG C; the magnetic microcapsules are prepared from ammonium chloride, m-dihydroxybenzene, carbamide, alloy soft magnetic particles, epoxy resin and formaldehyde water solution. The paint has the advantages that the self restoration time is short; the film forming performance is good; when the paint is applied to the oil-gas field casing pipe anti-corrosion, the anti-corrosion effect is good.