Provided is a material suitable for producing a glass fiber-reinforced molded body with reduced generation of white haze while reducing the amount of a dispersing agent to be used.
A glass fiber-reinforced propylene-based resin composition, including 10 to 50 parts by mass of glass fibers; 50 to 90 parts by mass of a propylene-based resin (provided that the both in total is 100 parts by mass); 0.3 parts by mass or more of carbon black; and a polyolefin wax having an average particle size of 1 to 40 μm in an amount such that a mass ratio of the polyolefin wax to the carbon black is 0.75 to 1.5.