To meet the rising demands of operational management in the subway integrated monitoring system, this paper, based on the analysis of Digital Video Surveillance System used in the integrated security project of the Shenzhen metro No .1 extend project, analyzes the moment widely-used video analysis system, points out the shortage of the system, and proposes some better improvement strategies. By deeply integrating relative the integrated security project of the Shenzhen metro No .1 extend project equipment into control systems, it makes the video analysis system more intelligent. At the same time, it also improves the accuracy of the supervisory system and controllability to the whole system. This paper describes the design idea, technology selection, system components, system structure and system function of the intelligent video analysis system in detail. In the end, it also explains the developing potential of the intelligent video analysis system.