Perimeter security and protection system

The invention relates to a perimeter security and protection system and method. The system includes a local server, a camera device, a communication device and a plurality of sensing processing devices located underground in a monitoring place, the plurality of sensing processing devices are electrically connected in sequence, the first one or the last one of the plurality of sensing processing devices electrically connected in sequence is electrically connected with the local server, and the local server is electrically connected with the camera device and the communication device. The technical scheme of the invention can expand a perimeter defense range, accurately judge whether a situation of an abnormal intrusion occurs in the monitoring place, and record related information when an abnormal situation occurs, so that staff can dispose in time, thereby improving safety of the monitoring place.