Abstract: Customer Lifetime Value (CLV) is one of the most important parts in Customer Relationship Management (CRM).Recently,scholars pay attention on the dynamic impact factors in different context,and some dynamic CLV models have been explored.However,there is no integrated classification for these dynamic impact factors.In order to promote the research in CLV modeling,classification of dynamic CLV impact factors has been studied in this paper,which includes customer related factors,enterp ri se related factors,customer-enterprise relationship related factors,and social environmental related factors.This classification is based on the review of 41 papers from 1990 to 2008.Enterprises should change strategrog according to social environment related factors,segment customer groups depending on customer related factors,and improve enterprise related factors to increase customer satisfaction.Thus,the customer lifetime value will be raised.

Key words: customer relationship management, customer lifetime value, dynamic impact factor