With the further development of the electric power informatization, information integration among different systems has become an urgent task. Marketing system and power distribution system are two important systems of the electric power enterprises. The electric power enterprises are in great needs for data sharing among these application systems. This paper presents a typical interactive informational model for the marketing and distribution systems based on the Common Information Model (CIM). First, CIM is analyzed and arranged in terms of the mutual parts of the applications of marketing business and power distribution management. Second, we extend CIM based on the practical application, describe extension attributes of related classes and associate the relationships between classes, and then, the Power Marketing and Distribution-Interactive Information Model is built. Finally, this paper presents an application solution on electric power marketing and distribution system integration using this model. That modeling Power Marketing and Distribution Interactive Information Model based on CIM not only conveniently implements data sharing of marketing system and power distribution systems, but also can make the two systems conveniently extended to integration with other electric power business information systems.