Abstract: In the Information Security System, physical security was in the basic position, should be paid enough attention. Using information technology to monitor and support physical security became an inevitable choice. Through the introduction of research background, from the view of platform function, system architecture and network, based on remote monitoring unit (RMU), platform communication protocol and multi thread monitoring data collection and processing technology etc., the paper presented the main technical scheme of a set of physical security monitor platform, analyzed and summarized the platform characteristics and application effect.