A polyamide resin composition contains: 85 to 95 parts by weight of a polyamide resin; 5 to 15 parts by weight of a wollastonite; 3 to 10 parts by weight, to 100 parts by the total weight of the polyamide resin and the wollastonite, of a styrene copolymer modified with at least one modifier of unsaturated carboxylic acids and unsaturated dicarboxylic anhydrides; and 0.5 to 5 parts by weight, to 100 parts by the total weight of the polyamide resin and the wollastonite, of a high-density polyethylene modified with at least one modifier of the unsaturated carboxylic acids and the unsaturated dicarboxylic anhydrides, and the polyamide resin containing ingredients: 10 to 50 parts by weight of nylon 6 and 50 to 90 parts by weight of nylon 66, based on 100 parts by weight of the whole polyamide resin.
