Temperature has always been a very important parameter. In many places such as electric power, coal, medical care, military and life, temperature measuring devices are needed to detect the temperature. Real-time temperature monitoring has become one of the important measures for all walks of life to carry out safe production and reduce losses. In some occasions, due to the scattered and remote monitoring points, the traditional temperature measurement method has a long period and high cost, and the surveyors have to go to the site to measure, which is very inefficient. During the long-term operation of high-voltage equipment in power system, problems such as surface oxidation corrosion, loosening of fastening bolts, aging of the joint between contact and bus often lead to overheating and even explosion of equipment. However, there is exposed high voltage in the switch cabinet, and the space is closed and narrow, so it is impossible to carry out manual inspection and temperature measurement. The traditional temperature measurement method cannot effectively solve this problem. The wireless temperature measurement system is to install the temperature sensor on the contact of the live connector in the switch cabinet, measure the temperature at this point online, upload the data wirelessly, display it centrally, and realize the over-temperature alarm. It can also be connected with the electric power automation system, so that users can monitor the temperature operation state of the equipment at the remote end, and the system finds that the temperature of the equipment is abnormal, and the automatic remote alarm can find out the hidden danger of accidents in time.