The purpose of this study is to explore the application of intelligent temporary construction management technology in extra-high voltage projects and analyze its effect through practical cases. Firstly, we will introduce the basic concept and development history of wisdom-based pro-construction management technology, and then elaborate its features and advantages in extra-high voltage projects. Finally, this paper will take a special high voltage project as an example for empirical analysis to explore the application of intelligent temporary construction management technology and its impact on construction progress. The wisdom of temporary construction management technology is a kind of intelligent construction management method based on big data, cloud computing and Internet of things. It can realize real-time collection, storage, processing and analysis of engineering data, so as to improve construction efficiency, reduce cost and guarantee quality. In extra-high voltage projects, intelligent temporary construction management technology has the following advantages: first, it can effectively avoid problems during construction; second, it can optimize the construction process and shorten the construction period; third, it can provide more comprehensive data to support decision-making. Therefore, intelligent construction management technology is one of the indispensable technical means in the field of extra-high voltage engineering.