The invention discloses a 125 DEG C irradiation crosslinking oil-resistant low-smoke halogen-free flame retardant cable material which is characterized in that a raw material formula consists of the following materials in parts by weight: 100 parts of ethylene vinyl acetate copolymer EVA, 5-15 parts of nylon 12 elastomer, 4-12 parts of nylon 12 grafted maleic anhydride copolymer, 120-165 parts of a magnesium hydrate flame retardant, 1.5-6.0 parts of a montmorillonoid synergic flame retardant, 2-4 parts of silicone master batch, 0.8-1.2 parts of a lubricant, 2-3 parts of a crosslinking sensitizing agent triallyl isocyanuric acid ester TAIC, 0.7-1.5 parts of a silane coupling agent, 0.7-1.2 parts of an antioxidant 1010, 0.7-1.2 parts of an antioxidant DLTP and 0.3-0.8 part of an anti-aging agent RD. By adopting the scheme, a halogen-free flame retardant insulating mixture material and a sheath mixture material which meet the EN50264 standard can be produced, the materials are good in comprehensive properties such as oil resistance, wearing resistance, flame retardancy, a machining process of a locomotive cable is simplified, and social values are achieved when the oil-resistant locomotive cable is used.