An object is to expand the capacity of storage of a luggage box and thereby to increase the efficiency of component transportation. A tray for vehicle storage space is formed from a fiber board that includes a bottom portion, side portions and flat portions extended from the side portions and that has a thickness of 2 to 6 mm, a total weight of 450 to 1000 g/m2, and a tensile strength of 850 to 2150 N/25.4 mm. The fiber board has linear first cuts provided on a surface side to divide boundaries between the side portions and the flat portions, linear second cuts provided on a rear face side to divide boundaries between the bottom portion and the side portions, linear third cuts provided on the surface side to fold back the side portions, and linear third cuts provided on the rear face side.