With the gradual liberalization of the power selling side and the continuous development o“f Internet+”, the energy demand of customers is going to be diversified and personalized.Customers are able to have more choices for power products and services，traditional power companies will face the risk of customers lose.For meeting the customers’needs more precisely, traditional power companies need to conduct further research on the characteristics of the customers’demands on the basis of the customer segmentation. Firstly, K means clustering method based on the electricity、electrovalency、capacity and other dimensions is used, to divide customers into five categories. Secondly, customer demands are obtained by the way such as key account service orders and customer surveys, and customer demands are segmented into five hierarchy according to business types and customer perception. Finally, the specific demand and hierarchy of needs for all types of customers are identified, and advise on the service resource allocation is given, to provide a basis for developing service strategies.