The invention discloses an anti-tear cable material used for a high-speed railway motor train unit and a preparation method of the anti-tear cable material. The anti-tear cable material used for the high-speed railway motor train unit comprises the following raw materials in parts by weight: 67 to 89 parts of polyurethane rubber, 22 to 36 parts of styrene-butadiene rubber, 15 to 25 parts of thermoplastic polyester elastic bodies, 4 to 8 parts of vinyl silicone oil, 17 to 26 parts of fumed silica, 3 to 6 parts of cadmium carbonate, 2 to 3 parts of lauroyl peroxide, 1.5 to 2.5 parts of triallyl isocyanurate, 1 to 2 parts of ammonium benzoate, 3 to 5 parts of poly-alpha-olefin, 5 to 10 parts of tert-butyl phenolic tackifying resin, 2 to 4 parts of triethylhexanoin, 10 to 15 parts of methylpentachlorostearate, 14 to 18 parts of carbon nano tubes, 10 to 15 parts of a diopside powder, 1 to 2 parts of 4,4'-dithiodimorpholine, 0.5 to 1 part of P-tert-butylphenol, and 20 to 25 parts of a composite flame retardant. The cable material provided by the invention combines the advantages of the raw materials such as the polyurethane rubber, the styrene-butadiene rubber, and the thermoplastic polyester elastic bodies, the tearing strength of a conventional cable material is improved, and the cable material is enabled to have excellent tear resistance, has the effect of bearing relatively great mechanical external force, and has the advantages of excellent chemical stability, heat resistance and age resistance, and long service life.