The invention discloses a heat-resistant polypropylene material for automobile interior trim parts, and is characterized in that the heat-resistant polypropylene material is prepared from the following raw materials in parts by weight: 80-90 parts of isotactic polypropylene, 14-18 parts of montmorillonite, 30-34 parts of polystyrene, 9-13 parts of PP resin, 1-2 parts of an accelerant M, 2-3 parts of a silane coupling agent KH-550, 23-25 parts of aluminum sulfate, 8-10 parts of glycerol triacetate, 3-4 parts of sodium hexametaphosphate, 1-2 parts of hexamethylphosphoric triamide, 1-2 parts of an anti-aging agent NBC, 12-15 parts of hard kaolin, and 6-9 parts of an auxiliary agent. With addition of the auxiliary agent, the heat-resistant polypropylene material enables heat resistance of the isotactic polypropylene to be enhanced, has low density, light weight and wear resistance, is conducive to application, and has smooth processing, high production efficiency, low cost and excellent comprehensive properties.