Abstract: This article focuses on the application of high-precision satellite 3D positioning technology of the Beidou system in real-time monitoring of a certain ultra-high voltage converter station project, as well as its special geographical environment and location. Establish parameter monitoring around surface displacement, deep displacement, retaining wall crack and rainfall. Through real-time structural parameter monitoring, you can grasp the Secular variation changes of important parameters of the slope body in detail, so as to timely and effectively feedback the slope safety status. Automated online monitoring of settlement of main buildings and dynamic compaction geology within the station. This provides reference for the digital construction of subsequent ultra-high voltage projects, while continuously improving the safety, quality level, and overall construction efficiency of the project site.