Foldable spliced vehicle-mounted assembled storage box

The invention discloses a foldable spliced vehicle-mounted assembled storage box. The foldable spliced vehicle-mounted assembled storage box comprises a top plate and a base plate, wherein the top plate is positioned over the base plate; an upper box body is arranged on one side, near the base plate, of the top plate; connecting rods are arranged on the two sides of the upper box body; a lower box body is arranged on one side, near the top plate, of the base plate; vertically-arranged supporting rods are arranged on the two sides of the lower box body; the upper box body is hinged to the lower box body; the upper box body is communicated with the lower box body; the supporting rods adopt cavity structures; through holes are formed in the two sides of the supporting rods; the connecting rods are connected with the inner walls of the supporting rods in a sliding manner; fixing slots are formed in one sides, near the supporting rods, of the connecting rods; springs are fixedly connected onto the inner walls of the fixing slots; fixing blocks are arranged on one sides, away from the connecting rods, of the springs; fixing rings are arranged on the two sides of the top plate; a shoulder strap is connected between the fixing rings. The foldable spliced vehicle-mounted assembled storage box is reasonable in design, small in occupied space and convenient for a user to store and fetch items, and prevents damage caused by mutual collision of the stored items.