The working environment of underground coal miners is a very special environment. Dark and humid, limited space, gas, coal dust, flood, fire, roof caving, water seepage and other potential disasters always threaten the life safety of coal miners, and this special environment directly affects the psychology of coal miners. In addition, the most common underground dust, vibration, noise, wind speed, lighting, temperature and humidity have great influence on the safety of coal miners. Greater danger at present; That is, gas explosion, roof accident, inclined car accident, underground electric shock, mine water inrush, fire accident, coal and gas outburst, rock burst, gas poisoning, mechanical injury accident, etc.