The invention provides an environment-friendly and cold-resistant polyvinyl chloride cable material and a preparation method thereof. The cable material is characterized by being made of the following raw materials by weight part: 40-45 of SG-6 polyvinyl chloride, 8-10 of dioctyl terephthalate, 3-5 of dioctyl adipate, 4-6 of zinc borate, 30-34 of aluminium hydroxide, 7-9 of vinyl propionate, 1-2 of acrylonitrile, 1-2 of butyl tin tris-2-ethylexanoate, 5-8 of epoxidized soybean oil, 2-3 of epoxy linseed oil, 1-2 of calcium stearate, 1-2 of zinc stearate, 2-3 of dibasic lead phosphite, 24-26 of barium sulfate, 12-14 of dolomite, 8-10 of bauxite, 2-3 of N-(beta-aminoethyl)-gamma-aminopropyl trimethoxy (triethoxy) silane, 1-2 of an antioxidant 10101, 1-2 of an antioxidant DLTP, 18-21 of precipitated silica, 1-2 of zinc oxide, 4-6 of tributyl citrate, and 6-8 of modified diatomite. In the invention, dioctyl terephthalate and dioctyl adipate are compounded, and the obtained cable material can be used normally under a low temperature environment ranging from -40DEG C to -65DEG C and has good shock resistance under a low temperature condition.