As an important transportation infrastructure, the quality and safety of tunnels are affected by various factor such as geology, structure and construction. Aiming at the problems of disordered information, insufficient integration, poor circulation and poor information transmission in current tunnel construction, BIM technology is introduced to establish a full BIM model for tunnel geology, structure and electromechanical equipment. Taking BIM model as a carrier, massive information in the whole process of tunnel construction is collected and integrated to realize structured storage, association and visual display of various data and form BIM model database. On this basis, the engineering information platform is developed by coding and lightening the model components. The application of the platform in Guangdong Jinmen Tunnel project not only effectively solves the "pain points" such as geological warning, construction progress, engineering quality and data management during the tunnel construction period, but also provides accurate and detailed engineering digital information for later operation and maintenance, and lays an excellent foundation for risk early warning and prevention and control of the tunnel body structure and facilities and equipment for safe operation.