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In order to achieve the air quality monitoring and management of network and information technology, proposed PM2.5 air monitoring system based on ZigBee. The system of PM2.5 monitoring sites periodically to monitor or real-time monitoring, measurement values ??are sent to the remote control center via zigbee / 3G / Ethernet gateway under control center for all monitoring points back PM2.5 measurements intelligent processing each PM2.5 monitoring point location value.The system in addition to low power, low cost, easy networking and other inherent characteristics of the sensor network, but also with centralized control, intelligent processing, high degree of automation and the advantages of wide application prospects. The most important data will be collected for processing, improve the accuracy of the system.