WIRING HARNESS

It is aimed to provide a wiring harness excellent in impact resistance and capable of reducing assembly man-hours and cost without particularly enlarging an outer diameter. A wiring harness () includes wires (), an exterior material, such as a pipe (), through which the wires () are inserted, and a reinforcing layer () formed to cover at least either the wires () or the exterior material. The reinforcing layer () is constituted by a resin film made of one or more materials selected from polyurea resin, polyurethane resin and mixed resin of the polyurea resin and the polyurethane resin.