Unmanned aerial vehicle spraying device

An unmanned aerial vehicle spraying device relates to the technical field of spraying devices and is characterized in that a fixing rod is fixedly arranged in a liquid storage cylinder, the upper end and the lower end of the fixing rod are sleeved with rotating blocks in a screwed mode through bearings, mounting blocks are fixedly arranged on the outer ring walls of the rotating blocks, and a cleaning rod is movably arranged in the liquid storage cylinder and is of a U-shaped structure; a stirring mechanism is arranged on the inner side of the cleaning rod, the cleaning scraping plate movably abuts against the inner wall of the liquid storage cylinder, the cleaning scraping plate is fixedly connected with the cleaning rod, the rotating rod is rotationally connected to the upper side wall of the liquid storage cylinder in a penetrating mode through a bearing, and the rotating rod is connected with the rotating block on the upper side; according to the pesticide spraying device, the inner wall of the liquid sto