Abstract:With the growing maturity of 5G, AI, cloud computing, Internet of Things and other high-tech, the infrastructure industry ushers in a period of rapid development of digital transformation. As a demonstration project of civil aviation type-4 airport, all participants are required to vigorously promote the digital construction of Ezhou Huahu Airport at the initial stage of project in order to accumulate the practical experience for the construction of the type-4 airport and assist the high-quality development of the airports in China in the new era. Taking the Ezhou Huahu Airport Municipal Supporting Project as an example, the application of BIM Technology in the design stage of the municipal supporting project is specially introduced to realize the full professional BIM forward design, and to carry out various applications based on the digital twin model, which provide the basic data support for the construction of the digital airport.