2. Disadvantages: preferential treatment for members is not attractive. Many of the benefits listed in the grade description are only general and not specific enough, and have not brought substantial benefits to customers. In addition, many benefits are not designed based on customers' demands and are unattractive, which makes the membership system unable to stimulate customers' desire to upgrade. The application conditions of the grade are unreasonable. The annual consumption of JD.COM Mall, a membership system for individual users, has reached 6,543,800 yuan, which is undoubtedly astronomical for individual customers. This kind of application has high conditions, but the treatment is not attractive. Gravity membership system, it is difficult to retain customers, let alone effectively encourage customers to increase consumption upgrades.