Abstract: The paper analyzed problems of existing coal mine wireless communication technologies based on status of coal mine wireless communication technologies such as through-the-earth communication, inductive communication, leakage communication, personal handy-phone system communication, WiFi communication and 3G communication, and introduced key technologies of green coal mine wireless communication combining with concept and characteristics of green wireless communication, including analysis of energy efficiency of coal mine wireless communication network, establishment of green coal mine wireless communication standard, design of high energy-efficient coverage method, collaborative communication technology in wireless network and high energy-efficient real-time transmission technology.