To provide an elastic wire harness capable of providing a branch circuit.

The wire harness 1 is provided with a plurality of electric wires 2, and connectors 3, 4 attached to the wires 2, and has an electric wire braided part 5 with the fellow electric wires 2 braided each other and having an outer shape formed cylindrically. An electric wire portion 9 to be stored of a branch harness 6 branched from the connectors 3, 4 to other connector 8 is assembled in an inside of the electric wire braided part 5 of the wire harness 1.