The invention provides a piggyback transport vehicle, which comprises a first end part device, a loading device, a second end part device and a rotating assembly, wherein the first end part device comprises a first end part bottom frame and a slide table; a slideway is arranged on the slide table; the second end part device comprises a second end part bottom frame; the loading device is arranged between the first end part device and the second end part device; the rotating assembly is arranged between the loading device and the second end part device; the loading device is provided with a matching part glidingly matched with the slideway; the loading device comprises a loading frame; the first end of the loading frame is detachably connected with the first end part bottom frame; the first end of the loading frame can move along the slideway; the second end of the loading frame is detachably connected with the second end part bottom frame; and when the first end of the loading frame moves along the slideway, the second end of the loading frame rotates on the second end part bottom frame through a rotating assembly. The technical scheme provided by the invention can solve the problem of poor adaptability of connection between the end part bottom frame and the loading frame in the prior art.