The fitness card has expired, and the information is still there. For the long-term development of the gym, when the membership card expires, the members will not come, but the information of the members will not be deleted and will remain in the sales management system of the gym. First, it will be kept as the development track and performance file of the gym; Second, big data analysis provides real samples of target customers for the sustainable development and operation of gymnasiums; Third, the business department contacts the customer to do the actual object list of the second sales renewal card.