Because of the large volume of data acquisition terminal and the rising of the network scale in the smart grid, data size is growing explosively. How to deal with the data efficiently, has become one of huge challenges that the power sector faces. This article proposes overall framework from the Angle of technology which is suitable for the development of data information processing of smart grid. The architecture is divided into four aspects:data acquisition, data storage, data processing and data visualization. Based on that, the paper introduces the techniques and effect of all aspects. Finally the massive data processing in application of smart grid has been achieved in Jiangsu Electric Power Company.