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For sewage treatment process is complex, wide area, more monitoring point, site wiring difficulty and so on, used CC2530 as the core to design wireless sensor nodes, aggregation nodes, realized real-time acquisition of device status、sewage flow、PH value、COD and other monitoring factors of import and export in the sewage treatment process,realized data transmission between the sensor nodes using the Zigbee wireless technologies,realized docking between gather nodes and platforms using GPRS. To ensure that the signals of monitoring system connected does not affect the normal operation of the control system, designed the high precision current extension module, serial port extension module etc. In the long running shows this system exhibits good flexibility and scalability, stable and reliable running, through the dynamic analysis of various parameters in the sewage treatment process play an important role in improving the efficiency of wastewater treatment and environmental protection.