With the development of computer technology and power grid, integrated dispatching automation system has been gradually applied and used, for it has made considerable progress in technological advance and functional reliability. A method of real-time data acquisition and exchange that adapts to integrated dispatching automation system is proposed, which follows the principle of distributed collection and centralized use. It makes full use of dispatching data network and service bus, to achieve the integration of point multi-source data processing, data forwarding and data remote access, under the situation of normal operation or network failure.