The utility model discloses an electric reactor wireless temperature measuring device. The electric reactor wireless temperature measuring device comprises a plurality of wireless temperature measuring terminals which are connected with a transformer substation electric reactor, wherein each wireless temperature measuring terminal is connected with a field intelligent management machine, and the field intelligent management machine is connected with a computer. According to the device, the advanced computer technology, the communication technology and the microelectronic technology are combined, an embedded system is taken as the core, a high-precision wireless intelligent sensor is adopted, and through a variety of reliable means of communication, advantages of good real-time monitoring function, easy operation, safety, reliability and high cost performance can be realized.