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Based on the ZigBee Wireless Sensor Network technology with its low cost, low power consumption and low complexity, which has great concerned application prospect. In view of its node energy limited, replace the battery isn't convenient and so on, this paper with an actual application, from the physical layer of hardware structure and network protocol in two aspects of the power consumption. Put forward by use of the low power consumption and has a variety of work mode based on the chip, the physical layer protocol reduces power consumption, could guarantee the algorithm of the quality and reduce the system of communication power consumption. Among them, reduce power consumption algorithm including: dynamic power management, the determination of sleeping time.