A method of manufacturing a sole according to the present invention includes the steps of obtaining a rubber part by previously crosslinking a polymer mixture containing 50 to 100 mass % of a diene-based polymer and 0 to 40 mass % of an acrylonitrile component in a polymer component of the polymer mixture, halogenating the rubber part, and bonding the rubber part and thermoplastic resin to each other by molding said thermoplastic resin on said rubber part.