The explosion-proof automatic fire gun fire extinguishing device is composed of explosion-proof fire gun, explosion-proof signal processor ZDMS-TY/Ex, explosion-proof field manual disk TYPS-HXC/Ex, using red / ultraviolet sensing technology, microcomputer control technology. Image transmission technology and mechanical transmission technology can automatically locate and extinguish early fires and manually extinguish them. When the fire is found, the fire gun will automatically scan and locate, automatically start the pump sprinkler fire, and send out the linkage alarm signal, which can automatically carry out DC columnar or spray water according to the ignition point, which can effectively protect the safety of person and property. It has three working modes: field manual control, remote manual control and automatic work, and can be forced to start detection according to the linkage signal of other fire alarm systems. The product can be installed in flammable and explosive refineries, oil tank areas, chemical and other petrochemical enterprises, as well as oil (gas) wharf, airport, ship berth, coal warehouse, large space construction and other industrial sites.