Abstract: In the transmission and distribution system, the high voltage power tower is an important power infrastructure. In recent years, there have been many accidents caused by social personnel climbing the high voltage power tower pole. It uses low-power millimeter-wave detection technology with excellent performance, combined with 5G communication and Beidou positioning function, to complete real-time data interaction with the background dispatching system. Once social personnel climbing events occur, timely detection and early warning are triggered to complete accurate positioning, and alarm events are triggered to the power dispatching system through 5G communication, and on-site video surveillance and voice warning modules can be connected. It also provides early warning for the power system in densely populated areas, and reduces the power safety accidents caused by personnel climbing of the high-voltage power tower pole.