Abstract: Based on EZMac Protocol,a real-time environment monitoring system was designed for surveillance of gas concentration,O2 concentration,CO concentration,CO2 concentration ,temperature and humidity in the coal mining face. Taking a radio frequency chip SI4463 as the key part of the monitoring system,the environment data of coal mining face can be acquisited, displayed, stored,wireless routed and transmited with the wireless EZMac Protocol, so as to monitor the environment data of coal mining face that the wireless network scope can cover.