In the background of “contorl integration”, the power grid control field comes into the era of big data. There are many problems in the power-control business, for example it only uses the report form to show the data, is lack of depth of mining and correlation analysis, and does not explore the potential value of the data and so on. This paper proposes an intelligent comprehensive analysis and decision and visualization technology architecture for power grid control data. The new system pretreats a mass of irrelevance data stored in large power grid dtabase firstly, and then combines data mining technology and business intelligent theory to analyze different business data, finally uses visualization technology to show the analysis results by a tree-dimensional way. It can supply data management and decision support for staff.