The invention relates to a material formulation of a guide rail for a stator core fault detection auxiliary device. The material formulation is prepared from, by weight, ceramic powder, silicon dioxide, hydrogenated butadiene-acrylonitrile rubber, polyetheretherketone, a graphite powder, a furnace black powder, paraffin, manganese dioxide, polysorbate, butyl methacrylate and tea polyphenols. A preparation process includes steps: proportionally preparing the materials, well stirring the ceramic powder, the silicon dioxide, the graphite powder, the furnace black powder, paraffin and manganese dioxide in a stirring machine to form a mixture, integrally melting the hydrogenated butadiene-acrylonitrile rubber, the polyetheretherketone, the polysorbate, the butyl methacrylate and the tea polyphenols at a high temperature to form an adhesive, adding the mixture into the adhesive, well stirring, cooling, grinding into particles being 1-2mm in particle size by a grinding machine, subjecting the particles to high-temperature high-pressure die casting at a temperature of 100-200 DEG C under the pressure of 100-300atm.