This article discusses how to arrange the shield zone surveillance camera with the arrangement of video surveillance camera in a certain shield zone as an example. Based on the expert investigation method, and the full use of the expert knowledge and experience, the article concluds that the subway shield zone needs to focus on monitoring the region. Using analytical hierarchy process(AHP) method, this article transfers the subway shield zone monitoring area selection into mathematical problems of the monitoring region important index, so as to obtain location of video surveillance cameras in a subway shield zone. The author talks to experts and construction workers about content of the project of the camera monitoring area and obtains the monitoring content table. By determining monitoring area and monitoring content of the shield zone, the problem of installing the video surveillance cameras without using is solved. Thus, the monitoring system masters the field construction dynamics, enhances the safety management of the construction site and reduces safety accidents.