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With the continuous development of technology, it gives a new type system of coal mine safety based on ZigBee technology. Using the characteristics of wireless sensor networks and the mature communication technologies of CAN BUS, it implements real-time monitoring and intelligent warning for underground environment and production parameters. This system is equipped with a low power ARM processor chip S3C2410 as the control of the core and ZigBee as a communications platform of wireless sensor networks. Through a lot of tests, many valuable data are collected from the actual environment, such as communications length, communication quality, power consumption and so on. The result of the experiment confirms the feasibility of the system design and its good stability.