To provide a polyolefin resin composition having an excellent balance among fluidity, rigidity, impact resistance and molding appearance.

This composition comprises 100 pts.wt., in total, 30-95wt.% polypropylene having a flexural modulus of 8,000kgf/cm2 8785MPa) or above and a melt flow rate of 10g/10min or above (at 230°C under a load of 2.16kg) and 70-5wt.% olefin elastomer, 0.1-50 pts.wt. hydrogenated block copolymer having a weight-average molecular weight of 10,000-700,000 and prepared by hydrogenating at least 80% of the olefinic unsaturations of an A-B-C block copolymer composed of a polymer block (A) based on an aromatic vinyl compound, a polymer block (B) based on a conjugated diene and a polybutadiene polymer block (C) and optionally 0-50 pts.wt. inorganic filler.