The present invention relates to an irradiation cross-linked halogen-free low-smoke insulation material used for photovoltaic electric cables and having characteristics of no halogen, high mechanical property, strong high-temperature resistance, strong ozone resistance, strong weather resistance and strong ultraviolet resistance, wherein the components comprise 20-40% of an ethylene-vinyl acetate copolymer, 0-20% of low density polyethylene, 10-20% of aluminum hydroxide, 0-10% of calcium magnesium carbonate, 1-10% of a coupling agent and a cross-linking agent, 1-10% of a compatibilizer, 0.1-1% of an antioxidant, 0.1-1% of a lubricant, and 0.1-1% of a stabilizer. According to the present invention, the irradiation cross-linked halogen-free low-smoke insulation material has the following advantages that the harms of the traditional PVC insulation material on the environment and the human body are overcome, and the irradiation cross-linked halogen-free low-smoke insulation material is non-toxic, green and environmental protection; and the irradiation cross-linked halogen-free low-smoke insulation material has characteristics of high mechanical property, strong high-temperature resistance, strong ozone resistance, strong weather resistance and strong ultraviolet resistance.