Drive in rack consists of upright frame, pallet rail, single and double side arm, top beam, back beam, single and double side spacer, big and small top bracing, back bracing, guide rail, upright protector and so on. Pallet weight is no more than 1500kg. The goods stack height on the pallet is no more than 2000mm. Drive in rack can make use of 75% of the warehouse space, is a kind of high density storage system. It can accommodate twice more pallets than pallet rack. Drive in rack is a kind of First-in-Last-out storage system, suits for storing these goods which is of fast turnover, unified and with long shelf-life.