WIRE HARNESS ROUTING DEVICE

A wire harness routing device includes: a rail for a sliding seat, which is installed on a floor surface of a vehicle; a slider that is slidably attached to the rail; a wire harness extending from the sliding seat side; a guide member configured to connect the wire harness to the slider, and to guide the wire harness to the side of the rail and in a direction along the rail; and an accommodation portion that is provided to the side of the rail, and that accommodates the wire harness that is guided by the guide member so that the wire harness is movable along with the movement of the slider, wherein the guide member is connected to the slider to be able to approach and separate from the slider, and to be inclined to the slider.