Provided is a work vehicle equipped with a traveling machine body 2 having an engine 5 on board, a link mechanism 111 for mounting a work machine onto the traveling machine body 2, and a lifting/lowering mechanism 22 for lifting and lowering the link mechanism 111, a portion of the traveling machine body 2 being constituted by a transmission case 17, portions of the link mechanism 111 being constituted by left and right lower links 23, a portion of the lifting/lowering mechanism 22 being constituted by a lift cylinder 117, and the work machine being attached in lifting/lowering fashion to the traveling machine body 2 by the left and right lower links 23, wherein the structure is provided with a lifting/lowering valve body 652 for operating the lift cylinder 117, the transmission case 17 is constituted by a front case 112, a middle case 114, and a rear case 113, and the lifting/lowering valve body 652 is arranged on an upper surface lid 118 which is installed on the upper surface of the rear case 113.
