The fire-fighting and extinguishing unmanned aerial vehicle is equipped with a powerful power system and a reliable flight control system. It is a fire-fighting unmanned aerial vehicle platform with large payload capacity, long endurance, strong wind resistance and high reliability. The entire machine is designed with carbon fiber materials and high-strength aluminum alloy. The rotor arms can be folded and support rapid deployment, making the operation convenient. The fuselage is simply designed, capable of carrying various loads such as tethered water guns and fire extinguishing bombs. It is equipped with a safe and reliable high-performance flight control system, ensuring stable flight posture. It supports various flight modes such as manual flight and fully autonomous flight. It can be widely applied in fire-fighting and extinguishing, emergency rescue, material hoisting, etc