With a competitive market and various demands of customers,the telecom companies need to make subdivision of market.Traditional way to subdivde market is not applicable in the telecom market with great amount of customers,lots of subdivision variables.The application of the data warehouse,OLAP and data mining tech- nology,which are the key technologies of business intelligence,to subdivde the telecom market is presented.With the support of data warehouse,OLAP can subdivide the telecom market with analytical idea,and data mining can play a better role in market subdivision with lots of variables.