PROBLEM TO BE SOLVED: To provide a transportation box repeatedly used in home delivery service. SOLUTION: The transportation box for a pot-grown plant uses a plastic solid fiberboard. The transportation box includes: a front face part 3, both side face parts 4a, 4b and a back face part 5 which form four peripheral faces of a box body 1; and an upper face part 6 and a bottom face part 7 which form an upper bottom and a bottom of the box. The front face of the box body 1 is openable/closable, and hinge lines 8 are attached on plate faces of the side face parts 4a, 4b. The hinge line 8 is a line serving as a bending guide formed on the plate face and crossing the side face part 4a, 4b diagonally from an upper edge on the back face side of the box toward an opening on the front face side. When the pot-grown plant G is stored inside the box body 1 or taken out from the box body 1, by bending the side face parts 4a, 4b toward outside of the box body 1 along the hinge lines 8, the box body 1 can be opened largely also to the both lateral sides. COPYRIGHT: (C)2012,JPO&INPIT