The UAV equipped with thermal imaging and visible light integrated cameras can help fire commanders quickly assess the fire situation at the scene, determine the location of fire victims, direct firefighters' fire fighting direction, master the distribution of explosives and chemicals near the fire site, early warning the direction of smoke and fire star drift, transfer people and property around the fire site, find residual fire in the fire site after fire fighting, and provide strong intelligence support to quickly extinguish the fire and avoid additional losses.