Abstract: The paper mainly introduced the data process and analysis method about sensor corrected (SC) level images of China high resolution ZY-3 survey satellite, including the method of high precision DEM process using the stereo image and CORS image control points, and the method of orthophoto image process using DEM and image control points. And then it used Guangzhou as the test region, and had accuracy analysis and verification of products using the method it presented. Based on the results, it discussed the ZY-3 satellite image feasibility and applicability in electrical power engineering.