Division of distribution control area is the foundation of operation, marketing, maintenance and fault analysis. By comprehensively analyzing the critical demands of the operation, control and management in distribution network, distribution control area is modeled based on common information model (CIM), in order to improve the efficiency of the fault diagnosis and optimal dispatching. Taking advantage of meta-modeling theory of CIM, this paper establishes a highly scalable, unified information model. The modeling requirement of static network topology and dynamic traverse is taken into consideration and the distribution control area is regarded as a base unit of business flow and information flow in the operation and management process. Finally, taking outage analysis for example, the accuracy and effectiveness of distribution control area modeling is verified.