High voltage electrical equipment temperature monitoring points are all located in environments with high voltage, high current, and strong magnetic fields, and some monitoring points are even located in enclosed spaces. Due to factors such as strong electromagnetic noise, high voltage insulation, and space limitations, conventional temperature measurement methods cannot be used. The wireless temperature monitoring system independently developed and designed by our company uses wireless communication for signal transmission. The sensor is installed on the high-voltage equipment and has no electrical connection with the receiving equipment, fundamentally solving the problem of difficult real-time online monitoring of the operating temperature of high-voltage equipment contacts. The wireless temperature monitoring system has extremely high reliability and safety, and its relatively low price allows it to be directly installed on each high-voltage switch, busbar joint, outdoor switch or transformer. The system is equipped with a standard communication interface, which can be networked for operation. Through the upper computer, the real-time temperature data of each high-voltage equipment can be recorded, providing reference data for the maintenance of high-voltage equipment, Realized predictive maintenance of thermal faults in high-voltage equipment.