In recent years, with the rapid development of society, people are developing more and more on the earth, accelerating the increase of global warming and abnormal weather, the forest fire risk level continues to rise, and the forest fire prevention situation is grim. The so-called green water and green mountains are Jinshan and Yinshan, we are bound to strengthen the prevention of forest fires. Forest fire areas are divided into low-level, middle-level, high-altitude stratification to deal with, different modes to extinguish. Fire fighting is divided into: the bottom layer creates an isolation zone by cutting off the fire line to block the spread of the fire line. The middle layer uses a high-pressure jet gun for the task, using a combination of water and dust to cover the fire source, reducing combustibles, and also a good protection for burned trees. Fog cannon is used to reduce dust at high altitude, and a large range of fog bombs are launched into the air to extinguish the fire on a large scale, so as to speed up the fire extinguishing efficiency. A complete fire extinguishing system is formed from these three ways, so that the fire is strong and weak and the fire extinguishing effect is finally achieved.