Lead temperature monitoring system

A lead temperature monitoring system monitors temperature of a transmission conductor by a temperature sensor, the temperature data and a PLC (programmable logic controller) are communicated in a serial port communication manner, and after the PLC processes the monitored data, the PLC transmits the monitored data to a monitoring center by a power carrier communication manner, and provides lead monitoring data for power workers. A power supply system of the system is characterized in that a solar battery panel converts solar energy to electric energy, stable voltage is provided for the system by a direct current voltage stabilizing module, and a storage battery serves as a backup power supply.