The invention discloses a special aqueduct transportation vehicle for water conservancy aqueduct erection. The aqueduct transportation vehicle is an integral vehicle formed through fixing a front aqueduct transportation trolley to a back aqueduct transportation trolley through a middle connection frame, wherein the integral vehicle adopts a four-rail three-span structure; each aqueduct transportation trolley comprises a horizontally arranged support beam, and two parallelly arranged upper connecting beams fixedly mounted below the support beam in a manner that the upper connecting beams are vertical to the axis of the support beam; upper connecting beam hinged supports are fixedly connected at the two ends of each upper connecting beam; the upper connecting beam hinged supports are hinged to a lower connecting beam component; lower connecting beam hinged supports are fixedly connected at the two ends of the lower connecting beam component; the lower connecting beam hinged supports are hinged to a lower balance beam; the two ends of the lower balance beam are respectively combined with lower balance beam hinged supports in a horizontal rotating hinged manner; and the lower balance beam hinged supports are hinged to the aqueduct transportation trolley through hinge pins. According to the special aqueduct transportation vehicle, the working height and weight of the aqueduct transportation vehicle are effectively decreased, the manufacturing cost is reduced, and the technical problem that the aqueduct transportation vehicle is driven on the upper plane of a large thin-wall opening aqueduct is solved.