The Henggang Depot Project of Fuzhou Metro Line 6 is the only depot of Line 6, which will be the key place for parking and maintenance of subway vehicles. At present, the main structure of this "giant aircraft carrier" has been completed and has entered the later stage of decoration and installation. After it is completed and opened to traffic, it will only take about 25 minutes to drive from Fuzhou Strait Convention and Exhibition Center and Sanjiangkou area to Fuzhou Binhai New City at the fastest, which is about an hour less than now. In this project, BIM technology is mainly used. After the design unit completes the forward design of the project, modeling is carried out based on the existing CAD drawings, so as to establish a full-professional model of the depot. In the modeling process, errors in the design can be continuously found and corrected, thus achieving the design-inspection-design process.