Abstract: There is a huge demand for content management in the railway construction industry. In view of the difficulties in unstructured data governance, high requirements for content management and complex multi-level authority control, combined with the characteristics of railway construction content management authority control, this paper designed and implemented the authority model of the content management for railway construction industry based on the role-based access control model. The model was applied to the railway construction content management system. Through the configuration of basic authority and role authorization, the model meets the requirements of multi-level and refined content management, and implements the sharing and interaction of project information.