Abstract: Put forward a design of unified monitoring system of circuit breaker temperature controller for the substation, according to the existing issues, such as numerous temperature controllers of circuit breaker, scattered installation and complicated management, etc. Based on ZigBee wireless communication technology, a new type of temperature controller that can be installed easily is developed eventually, which can realize real-time monitoring and unified management with online monitoring computer, thus to improve the management efficiency of circuit breaker temperature controllers and the stable running capacity of equipments greatly. The system is currently working in good condition at Xiheidai 35 kV substation in Xuejiawan Power Supply Bureau. Several abnormal points have been detected on some heating boards and through which the safe operation of breaker in the station is insured.