Unmanned aircraft, abbreviated as "UAV" or "UAV" in English, is a non manned aircraft operated by radio remote control equipment and its own program control device, or operated independently by on-board computer completely or intermittently.Compared with manned aircraft, UAVs are often more suitable for tasks that are too "dull, dirty or dangerous". UAVs can be divided into military and civilian according to their application fields. In military, UAVs are divided into reconnaissance aircraft and target aircraft. For civil use, UAV+industrial application is the real demand for UAV; The application in aerial photography, agriculture, plant protection, micro self photography, express transportation, disaster rescue, wildlife observation, infectious disease monitoring, mapping, news reporting, power inspection, disaster relief, film and television shooting, romantic manufacturing and other fields has greatly expanded the use of UAVs. Developed countries are also actively expanding the application and development of UAV technology in the industry.In September 2018, the 62nd meeting of the Harmonized System Committee (HSC) of the World Customs Organization decided to classify UAVs as "flying cameras"Unmanned aerial vehicles (UAVs) are unmanned aerial vehicles operated by radio remote control equipment and self provided program control devices. In fact, UAV is a general term for unmanned aerial vehicles, which can be divided into: unmanned fixed wing aircraft, unmanned vertical takeoff and landing aircraft, unmanned airships, unmanned helicopters, unmanned multi rotor aircraft, unmanned parafoil aircraft, etc. Compared with manned aircraft, it has the advantages of small size, low cost, convenient use, low requirements for the operational environment, and strong battlefield viability. Due to the importance of unmanned aircraft for future air combat, all major military countries in the world are stepping up the development of unmanned aircraft. In November 2013, the Civil Aviation Administration of China (CA) issued the Interim Provisions on the Administration of Civil Unmanned Aerial Vehicle System Drivers, and the China AOPA Association is responsible for the relevant management of civil UAVs. According to the Regulations, the operation of UAVs in mainland China can be divided into 11 cases according to the size of aircraft models and flight airspace, of which only UAVs of more than 116kg and airships of more than 4600m3 are managed by the Civil Aviation Administration in the integrated airspace, and other flights, including the increasingly popular micro aerial camera aircraft, are managed by the industry association or the operators themselves.