In view of the difficulty in information integration，high cost of data maintenance and the problems in in-depth information utilization due to scattered information，nonuniform data models and nonstandard information exchange interface in an interactive business hall，the functions and information of various application systems in the interactive business hall are dealt with，the information flow mechanism and the requirement of information integration in the interactive business hall are analyzed.A unified data modeling method based on the IEC61970common information model（CIM）is proposed.Loose coupled integration of the application systems in the business hall is realized by establishing a service framework based on a service-oriented architecture（SOA）component model with the utilization of a local information exchanged bus created by the enterprise service bus（ESB）message mechanism and the document direction.In addition，accurate and efficient information delivery between application systems is realized，reducing the maintenance cost of the interactive business hall.