Abstract: In order to improve the level of information based railway engineering construction archive management, this article proposed the design scheme of BIM based railway engineering construction digital archive system to implement the collection, management and utilization of railway engineering construction digital archive, introduced the system architecture, functions and design points. The scheme associates BIM with railway engineering construction digital archive to realize the whole life cycle management of digital archive based on BIM, and can provide a reference for the digital transformation of archive management in the field of railway engineering construction.