Abstract: This article studied the method to build up the BIM database of the design department in order to improve the rationality and high efficiency of the multi-dimension company-based database. The article sorted out the relationship between the company-based database and the project-based information model, analyzed the feather of railway signaling system and the technical boundary condition of signaling BIM design, suggested the principle of the company-based signaling database design, the classification and congregation of the signal elements, overall relationship with relevant industrial standards and specifications. The article also proposed the step-by-step implementation method of BIM database construction under current conditions. It clarifies the idea for the construction of signaling BIM database and provides an effective reference for all relevant railway signal participants.