In view of the demand for a small number of destinations (grid ports) for small parcels in express and e-commerce small sorting fields, through manual placement: automatic code reading + weighing + automatic sorting (2000 to 3000 / hour), its efficiency is higher and its speed is faster. It can operate foolishly, reduce the number of action links in the operation, save time and effort, have strong anti-interference, high stability and reliability, and further reduce the labor cost and equipment cost.