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Aiming at the short comings such as high energy consumption, high cost, poor real-time performance, easily damaged in military camp safety monitoring methods at the present time, a wireless security monitoring system based on CC2531 and CC2591 as the main ZigBee communication chip is explained in this paper, PC works as the monitoring host while deploying a variety of sensors in the wireless sensor network, the communication protocols are formulated. It is capable of automatic remote monitoring the temperature, humidity, human invasion, combustible gas smoke concentration information and early warning in a square kilometers range. The experimental of monitoring the outdoor temperature and relative humidity of Harbin in December verification of the system is also illustrated in this paper , there is no data lose while the deviation less than 2%, the results show that the advantages of the system lie in high reliability, high precision ,significant energy saving, flexible and easy to use with wide application promising.