Calculation formula of order cycle: order interval = total order days/order times. The order cycle is mainly affected by the following variables: 1 and order delivery time. Refers to the time interval from the customer placing an order to the seller receiving the order. The delivery time of orders used to be mailed for several days. At present, computer electronic data interchange (EDI) is used to order from suppliers or directly through the Internet, which greatly shortens the delivery time of orders and improves the ordering efficiency. At present, it has been gradually adopted by most enterprises.

2. Order processing time. It refers to the time to process customer orders and prepare for delivery. This function includes customer credit investigation, sales record processing, order transfer to warehouse and preparation of shipping documents. The efficiency of order processing can be improved by effectively using electronic data processing equipment and processing various tasks at the same time.

3. Order preparation time. It includes picking orders and packing them for shipment. From a simple manual system to a highly automated system, different handling systems will have a great impact on the order preparation time, and enterprise logistics managers should comprehensively consider the costs and benefits. The selection time and packaging time are mainly affected by the following factors: the degree of automation of the system; Complexity of customer orders; Performance and speed of sorting technology and equipment; Whether palletizing, pallet size matching, etc.

4. Ordering and shipping time. Refers to the time interval from the loading of the order on the means of transport to the receipt of the order by the buyer at the destination. The length of transportation time is related to the following factors: the scale of shipment; Mode of transportation; Transportation distance.