Abstract: Through combination of the Internet, big data, Internet of things and the construction process, a deep and real digital information model of the substation is built. Based on the staged construction management process, the digital model can be implemented to display the construction growth according to the Gantt chart schedule. The QR code scan mechanism of the model is established to associate the digital model and the real construction nodes. At the same time, through building appropriate management platform and developing APP function module, the life cycle management of power transmission and transformation projects is achieved. The BIM technology is used to precisely calculate the project quantity, which strengthens the information control of material costs to improve the cost calculation efficiency and save costs.