The power equipment temperature monitoring within substation is one of the indicators to raise the capacity of power equipment management. From the perspective of wireless monitoring, this paper analyzed the main principles of wireless temperature monitoring of current power equipment. And with technology, according to several defects, this paper put forward a way of data forwarding, management plan by combining wireless protocol ZigBee and cable transmission, analyzed temperature monitoring system from configuration of temperature sensor, wireless temperature node and center nodes, and software design process, and finally analyzed some of the key technologies implemented by temperature monitoring system, which has a certain guiding significance.