Abstract: In order to solve the shortcomings of traditional cross-linked polyolefin cable materials for wires and cables for 450/750 V and below, which have poor heat resistance and cannot be recycled, thermoplastic low-smoke halogen-free flame retardant polypropylene cable materials were prepared by mixing and plasticizing with polypropylene resin and ethylene-butadiene block copolymer as a base, adding halogen-free flame retardant, antioxidant, lubricant and other auxiliaries. Effects of tougheners, antioxidants and flame retardants on properties of cable materials were investigated. And propertie verification of material samples was carried out after formula optimization, as well as propertie comparison between trial cables and cross-linked polyethylene cables. Results showed that the selection of styreneic block copolymers（SBS） as a toughening agent had the best toughening effect on polypropylene materials, and tensile strength and elongation at break were optimal. In antioxidant system, when the combination ratio of antioxidant 1010 and antioxidant 168 was 3∶1, aging properties of polypropylene material were optimal. In the flame retardant system, nitrogen-based flame retardant and aluminum hydroxide were used to compound polypropylene materials, which had good flame retardant effect and low smoke generation. The properties of material samples and cable samples could meet the requirements of cross-linked polyolefin materials for wires and cables with a temperature resistance of 125 °C of 450/750 V and below, and wear resistance of polypropylene materials was better than that of similar cross-linked polyolefin products. Results in this paper could provide a reference for the development of polypropylene cable materials for low-voltage wires and cables.