Abstract: As a new building information technology, the database of BIM technology is dynamic, which can be continuously updated, enriched and enriched with the progress of the project, and has a strong dynamic, coordination and visualization. In order to explore the application of BIM technology in highway engineering, taking the rerouting project of Yaogu-Chadong section of Yunfu City of National Highway G324 as an example, combined with the actual needs of engineering construction, through the application of BIM technology, combined with Dynamo parametric modeling, new terrain measurement and intelligent site technology, the whole line BIM modeling work is carried out. The results show that the use of BIM technology in highway engineering can achieve the goals of optimizing construction organization, solving construction problems, improving construction efficiency, ensuring construction safety and improving engineering efficiency.