At present, the scale of road maintenance is growing exponentially, and the volume of road maintenance management is increasing.The traditional maintenance project management mode has low management efficiency, poor coordination, and weak awareness of life cycle management. It is urgent to use digital technology to clarify work tasks and projects objectives, standardize the project management process. This paper constructs a three-level project management model and a full life cycle management system model, and builds a project management platform based on the digital technology of multi-level views, so as to realize the normalization, standardization and digitalization of project management in the whole life cycle of highway maintenance engineering. The project management platform has been deployed and applied in Chongqing, Fujian, Zhejiang, Hubei, Guangxi, Yunnan, Anhui and other provinces and cities. It can adapt to different regions, different companies, and different levels of maintenance management models, assisting maintenance managers to improve maintenance management efficiency.