PURPOSE: To provide a manufacture of a hose having no necessity of cutting off the bag-like closed ends after blow molding, and besides, comprising a laminated structure of a rubber outer layer and a resin inner layer with correct dimensional accuracy in their end part inner surfaces.

CONSTITUTION: A laminated tube 32 having a resin tube 30 is prepared in the inside of an unvulcanized rubber tube 28, and core molds 38, 42 are inserted in the inside of opening end parts of the laminated tube 32 to block the end parts and perform inner diameter regulation, and it is then set in a blow mold 44. By heating thereafter or prior to this, the resin tube 30 is softened, and the laminated tube 32 is blow-molded into the configuration corresponding to the blow mold 44, and the unvulcanized rubber tube 28 is subjected to a vulcanization treatment, thereby obtaining a hose molding 10 having a predetermined rubber outer layer 12 and a resin inner layer 14 as the inner surface thereof.