关键词 客户关系管理 数据挖掘 客户分类 -I- Abstract Abstract With the development of automobile industry and the level of consumption, Customers have become critical success factors and potential source of profit in China's car industry. With the social development and the advancement of technology, especially the development of network technology, the OEM introduces a customer relationship management (CRM) system to help manage customer information. The implementation of the CRM system can help companies better understand customer needs, improve business relationships with customers, improve customer satisfaction, thereby enhancing the competitiveness of enterprises. CRM system which is based on data mining can give an accurate classification to customers by analyzing and mining customers' information. Data mining technology can track the customers' consumption patterns and consumer tendencies, predict the profit that customers create. It could support marketing decision-making. Firstly, this thesis discusses related literature research, analyses the customer Relationship management definition, connotation and core ideas,