Disclosed herein is a compound composition for a vehicle interior material using a natural fiber, which has use for enhancing physical properties, such as shock resistance, tensile strength, flexural strength, elongation, flexural modulus of elasticity, and heat deflection temperature, while realizing a reduction in weight of a vehicle. The compound composition is composed of a base resin obtained by mixing a high-fluidity polypropylene resin and a high-impact polypropylene resin, the base resin being a thermoplastic resin, a reinforcing filler that is a lightweight, eco-friendly, and low-density natural fiber, an impact modifier that is ethylene-propylene-octene rubber, an inorganic filler that functions as a nuclear agent, and a maleic-anhydride compatibilizer.