The invention relates to a composite reinforced modified polypropylene composition for vehicle parts. The composite reinforced modified polypropylene composition is characterized by comprising, by weight, 50-78% of a polypropylene resin, 15-25% of a toughening agent, 6-22% of an inorganic filler, 0.1-1% of an antioxidant, and 0.1-1.5% of a processing auxiliary agent, wherein the melting index of the polypropylene resin at a temperature of 230 DEG C under a test condition of load of 2.16 kg is 30-40 g/10 min, the toughening agent is a polyolefin elastomer, the inorganic filler is magnesium sulfate crystal whisker, talc powder, or a combination of the magnesium sulfate crystal whisker and the talc powder, the antioxidant is selected from butylated toluene or a combination thereof, and the processing auxiliary agent is selected from a fatty acid ester, a metal soap, or a combination of the fatty acid ester and the metal soap. The composite reinforced modified polypropylene composition has characteristics of excellent flexural modulus, excellent impact strength and excellent fluidity, wherein the mechanical property can meet requirements of practicality and safety of the vehicle part when the thickness of the vehicle part is reduced by 1/3.