Abstract: BIN is a kind of advanced technology and management philosophy. The essence of BIM lies in the various information data throughout the full life cycle of bridge engineering and the implementation of integrated management of full life cycle to the planning and design, construction and operation maintenance of the project. This article combined with the engineering practical needs, researched on the BIM based bridge construction and maintenance integration platform, discussed typical function module under the different stages of construction and operation maintenance. The collection, transmission, communication and integration of engineering information were controlled effectively by breaking information fault, using data analysis and mining technology. The data basis and technical support were provided for the fundamental research, product development and revision of railway bridge specialty to implement the final objective of BIM based service.