With the gradual fading of the public domain traffic dividend, the traditional internet marketing method can no longer meet the needs of enterprises to obtain customers at low cost, and private domain marketing has become a new marketing method for enterprises to obtain traffic and promote growth. Among them, recommendation, as one of the efficient and low-cost ways to get customers, has become one of the important marketing methods that have attracted much attention because of its high lead quality, high user trust and fast transaction speed. Education SCRM system has newly introduced the function of "customer recommendation" to help enterprises quickly split high-quality customers and realize low-cost customers. The essence of recommendation is word of mouth+motivation. First of all, what is referral? Referral is a new form of activity, which uses some incentives to stimulate users to share, so as to achieve the purpose of customer A and customer B to buy. Introduce every contact and life cycle of products that customers come into contact with, and the core is a word-of-mouth and incentive-driven sharing and strategy. If there is only word of mouth and no incentive, then the motivation for customer recommendation will be insufficient. On the contrary, if there are only incentives and no word of mouth, it will inevitably have some adverse effects on recommending customers. Sharing is the key action in the game of introduction. How to stimulate high-quality sharing? Sharing forms include common circle of friends sharing, one-on-one sharing, community sharing and other social traffic channels sharing. The shared content can be graphics, video, audio, etc. Judging from the difficulty of sharing by users, it is generally shared by other social traffic channels.