Precise pesticide spraying system and method for plant protection unmanned aerial vehicle

The invention belongs to the technical field of precise pesticide spraying, and discloses a precise pesticide spraying system and method for a plant protection unmanned aerial vehicle. The plant protection unmanned aerial vehicle pesticide precise spraying system comprises a spraying video monitoring module, an unmanned aerial vehicle control module, a central control module, a video enhancement module, a spraying position determination module, a pesticide spraying module, a fault detection module and a display module. Each group of adjacent pesticide spraying video frames in an enhanced pesticide spraying video obtained through a video enhancement module is enhanced images corresponding to a group of to-be-processed pesticide spraying video frames and a target pesticide spraying video frame in a to-be-processed pesticide spraying video; the video definition is improved; meanwhile, the flight state information of the pesticide spraying unmanned aerial vehicle is obtained through a fault detection module, a fa