The invention provides a special impact-resistant polystyrene material for new-energy vehicles and a preparation method of the material and relates to the technical field of high-polymer materials. The special impact-resistant polystyrene material for the new-energy vehicles is prepared from the following raw materials: high-impact-resistance polystyrene resin, acrylate epoxy resin, polyurethane elastomers, modified fibers, graphene oxide, nano talc, triphenyl phosphate, isophorone diisocyanate, tris(2,4-di-tert-butyl-pheny)phosphite, silicone oil, a plasticizer and a toughening agent. The special impact-resistant polystyrene material for the new-energy vehicles has the relatively high impact resistance, tensile strength, heat resistance and bending resistance and can keep the excellent impact resistance in the relatively wide temperature spectrum range.