By using roller rail system and pallet with rollers and under the influence of gravity, push back racking can achieve “first in and late out” easily, in and out from the same way. It is used for storing large quantity of goods with the same kind, and make full use of the space. The depth of the racking should be less than that of five pallets’. The weight of the single pallet with goods is normally less than 1500kg.The height is around 6M. This kind of system is very important to the manufacturing precision, and the cooperation between the pallet and the guide rail is very important. The racking with high cost, and has been used in China, such as electronics, store and supermarket field.