A wireless sensor network system is put forward that is applied in the field of monitoring wind load based on ZigBee technology. The hardware of the system adopts the SOC chip CC2530 as the core of the wireless communication model, and its front end CC2591 to extend the communication distance so as to reach the requirement of the specific application. In addition, the data acquisition model chooses pressure sensor monitoring wind load which connects to the microcontroller on the wireless communication model. The system software introduces sleep mode to realize the low power consumption when there’s no task in the system. The system is designed to monitor colossal buildings in typhoon situation, which will be applied to monitor the wind load on the cooling tower in power station soon.