With the development of economy, the acceleration of urbanization and the promotion of living standards, power users have put forward higher requirement of the power quality and reliability. The traditional methods of management can not satisfy the demands of users. Therefore, the power supply enterprises need to make use of the advanced technology to improve the technological and automation level. The marketing-distribution integrated system which takes the GIS platform as the basis, the users’ demands as the orientation, is comprehensive and cross-business application system. It can improve the level of management obviously. This paper proposes the construction aims, construction principles, the frame of information platform and application platform which are critical for the integration system.