Abstract:Wireless sensor network is the hotspot technology in environmental monitoring area. Combining ZigBee and wireless sensor network，we designed an environmental monitoring system which integrates a variety of functions.In this system,the CC2530 was as ZigBee communication module, and GPRS was used as gateway communication mode with 3G network.The system realized collecting the environmental information such as temperature, humidity, light intensity and so on，and the informations were handled accordingly in the gateway，and the gateway data processing algorithms has been designed.The specific working way of system is that the sensor nodes of environment monitoring system got the data of environmental information and sent it to the coordinator nodes by adhoc, as well as the gateway can uploaded the sensor data to the cloud server by GPRS after being processed；So the user can use cellphone and web page to check the environmental information. If there is the danger information ,the important warning data will be sent to the user's mobile phone,in the meantime send email or weibo to remind users through the server. After using and testing, The system operates reliably,and can obtain environmental data correctly, and the data of gateway and server can be real-time update, the environmental parameters can realize automatic adjustment and calibration.