The present invention relates to a storage device for vehicles, a floorboard can move between an upper layer portions or a lower layer portions, even if the depth of the concave portion of the storage is more shallow. The storage device for vehicles (3) with a floorboard (5) as being coverable over a concave portion for storage (4) provided in a cargo room. The floorboard (5) includes a main body (54) as being coverable over the concave portion for storage (4), and a connecting body (51-53) as one end thereof being connected to a main hinge (56a) arranging at an approximately middle position in the direction of depth of a wall of the concave portion for storage (4), and the other end thereof being connected to the main body (54) by a hinge, so as to be supported by switching the position thereof between an upper position supported at a supporting portion (4f) formed in an upper edge side of the concave portion for storage (4) and a lower position supported by a bottom surface side of the concave portion for storage (4). Then, the floorboard (5) is combined with the cargo room (1d) as the main hinge (56a) being movable relative to the supporting portion (4f).