The structural health monitoring system of small and medium-sized bridges is the final display of bridge safety monitoring, which is of great significance. Therefore, we virtual a bridge in monitoring, and combined with the bridge health monitoring data provided, the use of big data, artificial intelligence and other technologies, the development of small and medium-sized bridge structure safety monitoring system software system, to achieve monitoring data storage, analysis, visualization, when the bridge situation can be issued in a timely manner early warning, to do a good job of response measures. At the same time, it provides a manual inspection data entry interface and a manual inspection report entry interface to realize electronic file management within the system and classify, disassemble, manage the entered data according to the title, attribute and corresponding automatic monitoring data of the disassembled data. It evaluates and analyzes the bridge health status through comprehensive multi-party data and can predict and warn the bridge monitoring indicators.