The reality shows that customer relationship management is quite popular in the world but still new in Vietnam, businesses are still not aware and focus on the importance of customer relationship management. Therefore, in the context of fierce competition today, in order to acquire and retain customers, Bach Hoa Xanh, the medium size supermarket chain in Vietnam, must have appropriate customer management policies. Building a customer management system will create and maintain sustainable relationships with existing customer groups as well as potential customer groups, through which will also best satisfy the needs of customers, increasing value for customers and at the same time increasing the profit value for Bach Hoa Xanh.