Plant protection UAV is a UAV used in the field of agriculture, belongs to Class V UAV, widely used in modern agriculture and forestry plant protection, mainly used for spraying chemicals, seeds, powder and so on. There are many kinds of plant protection UAVs, which can be divided into electric plant protection UAVs, oil-electric hybrid plant protection UAVs and oil-powered plant protection UAVs according to power division. According to the model structure, it can be divided into single rotor plant protection UAV, multi-rotor plant protection UAV and fixed wing plant protection UAV.