There are provided a wire harness and a manufacturing method thereof which can reduce number of components and which does not require an electric wire to be formed longer than necessary. A wire harness includes an electric wire and a tubular corrugated tube made of synthetic resin and arranged to receive the electric wire to protect the electric wire. The corrugated tube is bent at an appropriate section when wired on an automobile. The corrugated tube includes recessed grooves and protrusions arranged alternately along a longitudinal direction. The adjacent protrusions of the appropriate section on the inward side are attached to each other by welding. The appropriate section is bent in a non-restorable fashion in a direction in which the appropriate section is bent when wired in the automobile.