The gravity shelf uses the gravity of goods to automatically slide from the storage end to the storage end, so as to achieve the flexible connection of in and out, and adopts the "first in, first out" access principle. This kind of shelf uses forklift to pick up goods. Forklift does not need to be opened into the shelf area. Picking and replenishment are separated. Pallets are put into storage from one end, reducing the two operations in the receiving area. It is especially suitable for warehouse operations with time requirements and need to be delivered from the other end.