Abstract: An online analytical processing(OLAP) based solution is proposed to cope with the complexity and mass data of automobile marketing business.The automobile marketing OLAP system structure and the marketing models are given.Then a cross-platform,open and customized OLAP system is developed based on them.This OLAP system can support most of the popular databases and data models,and provide multiform data presentation.It can(offer) powerful technical support to Hafei Motor Sales Company for sales and after-sales data analysis,which can provide a scientific foundation to help explore the dynamic market deeply,and make reasonable decisions.