The invention discloses a heat-resistant conductive polypropylene composite material and a preparation method thereof; the heat-resistant conductive polypropylene composite material comprises components in parts by mass: 45-75 parts of polypropylene, 5-30 parts of glass fiber and 16-24 parts of conductive carbon black. The composite material takes polypropylene as matrix resin and is prepared by a one-step melt kneading method; the glass fiber and the conductive carbon black have an obvious conductive synergistic effect, so that the composite material has excellent rigidity, heat resistance and good electrical conductivity; and the surface resistance is not higher than 109W, so that the composite material can be applied to a package and a chip carrier with anti-static requirement as well as a motor vehicle and the information and communication industry with electromagnetic shielding requirement.