With the development of computer, internet and other technologies, the application areas of cloud computing technology continue to expand, which provides an opportunity for the transformation and upgrading of IT companies. Based on the concept of cloud computing technology and according to the requirements of China’s future power grid dispatching technical supporting system, the centralized-distributed and centralized system architecture of dispatching technical supporting system are respectively proposed in this paper. With the comparison on these two kinds of architectures, the centralized-distributed architecture is pointed out to be the recent development goal of the dispatching information system of China. For the centralized-distributed system architecture, the 1+N two levels deployment architecture is put forward. Finally, the technical problems of the application of centralized-distributed architecture to power grid dispatching automation system are analyzed in this paper.