Chemical fertilizer reserve detection device of plant protection unmanned aerial vehicle

The utility model relates to the technical field of plant protection unmanned aerial vehicles, in particular to a plant protection unmanned aerial vehicle chemical fertilizer reserve detection device which facilitates reserve determination and comprises a plant protection unmanned aerial vehicle body, the plant protection unmanned aerial vehicle body comprises a pesticide storage box, a pesticide storage cavity is formed in the pesticide storage box, a lighting lamp is arranged at the top end of the pesticide storage cavity, and a concave sliding rail is arranged at the left end of the pesticide storage cavity. A concave sliding rail is arranged in the middle of the medicine storage cavity, a sliding floating block is arranged in the middle of the concave sliding rail and matched with the concave sliding rail, a plurality of scale grooves which are evenly distributed at intervals are formed in the front end of the concave sliding rail, a reflector is arranged in each scale groove, and a remote monitoring came