Domestic coal mines are mostly high gas mines, underground working environment is complex, containing combustible and explosive gas, how to prevent the leakage of combustible materials and prevent the production of effective ignition source, is the most widely used method to reduce the risk of explosion, and the use of correct equipment can be more effective prevention of dangerous situations. Nowadays, explosion-proof products have been widely used in the underground, and they will not produce fire source and cause explosion when used in the underground high-risk environment.