The invention relates to a cable material, and specifically relates to a high-temperature steam-resistant and ageing resistant modified fluororubber cable material. The cable material comprises the following raw materials in parts by weight: 30-35 parts of fluororubber, 15-18 parts of low density polyethylene, 3-4 parts of zinc oxide, 3-4 parts of 2, 5-dimethyl-2, 5-bi(tert-butyl peroxide) hexane, 2-3 parts of triallyl isocyanurate, 18-20 parts of SG-3 polyvinyl chloride, 10-13 parts of natural rubber, 12-15 parts of calcium carbonate powder, 3-4 parts of magnesium oxide, 1-2 parts of ferrocene, 2-3 parts of isocyanate, 5-8 parts of epoxidized soybean oil, 2-3 parts of isobutyl acrylate, 1-2 parts of sulphur, 30-34 parts of N339 carbon black, 24-28 parts of nano diatomite powder, 7-9 parts of linseed alkyd resin, 1-2 parts of an anti-aging agent NBC (Nickelous N,N-dibutyldithiocarbamate) and 4-5 parts of an assistant. The cable material combines the advantages of fluororubber, natural rubber, low density polyethylene, SG-3 polyvinyl chloride and the like, and enhances the performance of a conventional fluororubber cable material, so that the high-temperature steam-resistant and ageing resistant modified fluororubber cable material has good strength and toughness and excellent high-temperature steam corrosion resistance and ageing-resisting function, can be applicable to special using environmental conditions and has a broad market application prospect.