PROBLEM TO BE SOLVED: To provide a work vehicle in which a wire harness 54 can surely be routed to a bonnet 18 by eliminating the need of a harness clamp and a mounting component of the harness clamp itself while eliminating the need of the wire harness 54 of a headlight 52 and a special support member without causing contact or rubbing due to vibrations of the wire harness 54 with an engine part or the like.SOLUTION: When routing the wire harness 54 for feeding the power to left and right headlights 52 along the inner surface of the bonnet 18 from the closeness of the rear part to the closeness of the front of the bonnet, a hook 51d is integrally molded with a center cover 51 including a vent hole provided at the front of the bonnet 18, and the hook 51d is made to support the wire harness 54 to perform routing.