The high-definition camera monitoring system should be able to realize the collection, transmission/conversion, display/storage of audiovisual and alarm information, and carry out authority management to ensure the safety of information. After the monitoring system is completed, it will continuously monitor key accident-prone areas through the camera system, and adjust the monitoring area through the remote control of the control center and sub-centers. Security personnel can understand the situation and supervise the situation in real time without leaving the house. Once an incident occurs, the on-site video record can be consulted to facilitate investigation and handling. The on-site monitoring mode is changed from the traditional single type and extensive type to comprehensive and intensive type to improve management efficiency. Better move closer to the direction of intensive management mode, intelligent management methods, and technological management methods. The following focuses on the composition and function of the high-definition surveillance system.