To reduce the total stock of external parts in an assembling factory of a wire harness and to provide a wire harness manufacturing device including a wiring board that wires a plurality of electric wires and a molding machine that forms external parts attached to the plurality of electric wires in the assembling factory of the wire harness. A wire harness manufacturing device 1 includes a molding machine 2 that forms external parts 31, 32, 33, 35 and 44 attached to a wire harness 20 and a wiring board 3 having a binding device that wires a plurality of electric wires 40 to a prescribed form.
