In order to effectively solve the construction risks of the large-section tunnel at Minggugong Station of the subway, the project innovatively adopted the information construction technology of integrating BIM and GIS to dynamically manage the construction process. Based on the 3D model, GIS imagery, environmental monitoring data, and construction monitoring data, the project integrated BIM, GIS, visualization, and big data technologies to build an information construction management cloud platform. By accurately modeling and associating spatial information, the project achieved timely warning and visual assessment of construction risks, greatly enhancing the safety assurance and construction efficiency. This paper analyzes the construction difficulties faced by the project and provides a detailed introduction of the technical route, digital twin scene construction, system development, and application implementation of the information construction technology. It summarizes the application achievements and realization goals of the project, accumulating certain data basis for large-section tunnel information construction technology and providing reference for similar subsequent projects.