In the era of pursuing service economy, every enterprise wants to make itself invincible in the severe environment. With the target market of enterprises gradually changing from "seller-led market" to "buyer-led market", it is urgent for global enterprises to cultivate high-quality customers, which means that enterprises pay more and more attention to the quality of customers, that is, customer satisfaction and loyalty. Because in the fierce market competition environment, only satisfied customers will buy enterprise products again. Customers are satisfied with the products or services of the enterprise and will be loyal to the enterprise, which is the basic guarantee for the long-term development and profit of the enterprise. However, the relationship between customer satisfaction and loyalty is not very simple, and it is influenced by many random factors (constraints).