Pick the goods of each order one by one. The difference is that in the DPS picking process, the information is paperless, so as long as the picker picks the goods according to the information prompted by the electronic tag system, it will be more accurate and faster, and the labor intensity of the picker will also be reduced.

Take the order as the unit, once for each order. This kind of picking operation method is simple, the delay time is short, the picker's responsibility is clear and easy to evaluate. No sorting is needed after picking. This is a traditional picking method, which is suitable for picking a large number of orders. Disadvantages are many kinds of goods, long collection and transportation path, low efficiency, large collection and transportation area and difficult handling.