The invention provides an environment-friendly cold-resistant polyvinyl chloride cable material and a preparation method thereof. The environment-friendly cold-resistant polyvinyl chloride cable material is prepared from the following raw materials in percentage by mass: 40-60% of polyvinyl chloride, 5-25% of dioctyl terephthalate, 5-25% of dioctyl adipate, 1-10% of chlorinated polyethylene, 5-25% of light activated calcium carbonate, 1-3% of lubricant, 2-8% of Ca-Zn composite stabilizer, 0.1-1% of antioxidant and 0.1-4% of pigment. The environment-friendly cold-resistant polyvinyl chloride cable material is mainly compounded from dioctyl terephthalate and dioctyl adipate. The cable material can be normally used in a low-temperature environment of -40 to -65 DEG C, has favorable shock resistance under low-temperature conditions, does not contain ortho-benzoic ether compounds, and is environment-friendly, thereby solving the problem that the existing polyvinyl chloride cable material is not environment-friendly and has poor shock resistance under low-temperature conditions.