PURPOSE: To provide a duct hose for automobile, which excels in heat resistance and flexibility and is suitable for use particularly in engine room, consisting of a specified resin material.

CONSTITUTION: There is used a resin having a melt flow rate of 0.01W4g/10min and consisting of 0W1pt.wt. of a propylene homopolymer block part, 1W2pts.wt. of a random copolymer block part of propylene and a 5W12C α-olefin, and 0W 1pt.wt. of ethylene homopolymer block part (or a random copolymer block part of ethylene and a 5W12C α-olefin). The resin is molded into a duct hose. As the molding method, it is preferred to use a molding method which forms a pinch-off part (such as a blow molding method or a vacuum molding method).