According to the design idea of "unified planning, unified standard, unified platform and unified management", the "intelligent community security system" realizes the comprehensive perception of community data and events through video monitoring, micro bayonet, face access control and various IOT sensing devices in the community, and is connected through switches, optical fiber transceivers and optical cables, and makes full use of new technologies such as big data, artificial intelligence and Internet of things, Build an "intelligent security community system" with big data intelligent application as the core, forming a three-dimensional community prevention and control system combined by public security, comprehensive management, streets and property management, effectively improving the powerful Poe function of special groups, key concerns, cases involved and Poe switches, which can directly power cameras or some access control systems and solve the problem of laying additional power lines.