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Aiming at the features of environmental information monitoring, a multi-parameter monitoring system is designed based on low-power ZigBee wireless communication technology to improve overall the level of system automation and monitoring. By wireless sensor networks the data is collected and processed real-time and at the receiving end the data is received, saved and displayed to achieve temperature and humidity monitoring. The implementation of system software and hardware are given, including the design of wireless node and the implementation principle of data transmission and communication modules. This system overcomes the limitations of wired sensor networks and has the properties of flexible networking for monitoring equipment, convenient removing, low cost nodes and high capacity. The monitoring results for temperature and humidity have shown that this system is stable, high reliable in data transmission and easy to use, and can be widely used in various areas of automatic monitoring of environmental parameters.