To provide a transportation device allowing a worker to push with the hand and transport weighted harvested crops in a plastic greenhouse without receiving vibration and shock.

This transportation device is such that rail supporting metal fittings 2 to attach rails 3 are attached to the prop (pipe material) 1 of a plastic greenhouse structure member, two rails 3 are fixed thereto with rail fixing metal fittings 5, and a four-wheel caster 4 attached with a receiving stand 7 adjustable in vertical height and set with a handle part 6 to facilitate pushing with the hand is driven on the two rails 3 by pushing with the hand.