The automatic fire fighting gun is composed of fire fighting gun body, signal processor and field manual control panel. It combines micro-control technology, infrared/ultraviolet sensing and detection technology, mechanical rotation control technology, image transmission technology, automatically looking for the precise location of the ignition point and effectively and quickly extinguish the fire source; According to the line of ignition system is automatic 逬 dc on or spray water injection of fancy, effective fire at the same time, and can protect to the personal and property safety; Has the field manual operation control and the image display function; According to the linkage signal of other fire alarm system, the fire source can be started compulsively; The infrared/ultraviolet dual-band detection technology can effectively detect the fire source and improve the ability of anti-environmental interference. And ground sensitivity parameter setting and debugging.