Pick-up and pick-up method is a pick-up method for the same customer order, different kinds of small goods and small batch delivery. This way of picking goods is like picking vegetables in a garden. Commodities are very small, and most of them are classified and placed on gravity shelves. When picking up the goods, according to the items listed in the customer's order, put the goods on the trolley and pick up the goods in turn. After picking, the goods can be pushed out on the shaft conveyor or directly pushed by the trolley. The goods on the gravity shelf are empty, so you can replenish them directly from the back. Under the action of gravity, the replenished shelf will slide to the front of the shelf, which is convenient for the next picking.