Abstract: In order to solve the problem of real-time dynamic display, query and playback of video surveillance for police,the algorithm of video surveillance network was designed and realized. Visual Basic.NET, ArcEngine and Access were used as development platform. Firstly, framework of the video network was built. Secondly, the algorithms of the network topology and the shortest path were designed. Thirdly, network analysis and real-time query and playback of the videos were realized after a spatial database and a network data set were constructed, respectively. The algorithm improves the level of spatialization and visualization of the video surveillance