An irrigation and spraying system based on unmanned aerial vehicle hoisting, mainly composed of: an L-shaped base plate (1), a tank (2), a tank cover (3), a water filling opening (4), a material filling opening (5), a pneumatic rod frame (6), an electric-powered pneumatic rod (7), a piston (8), an irrigation opening a (9), an irrigation opening b (10), a stirring rod (11), a stirring bolt (12), and a bolt sleeve (13), the tank (2) being fixedly arranged on the L-shaped base plate (1), the water filling opening (4) and the material filling opening (5) respectively penetrating one side of the tank (2), and the irrigation opening a (9) and the irrigation opening b (10) respectively penetrating the other side thereof a stirring rod (11) is respectively built into the irrigation opening a (9) and the irrigation opening b (10). The stirring rod (11) is formed into one by means of a plurality of stirring bolts (12) welded end to end, and is formed by sleeving a bolt sleeve (13) over the stirring bolts (12). The pneumatic rod frame (6) is arranged at one end of the tank (2), the electric-powered pneumatic rod (7) being fixedly arranged on the pneumatic rod frame (6) the piston (8) is arranged at the end of the rod of the electric-powered pneumatic rod (7), and the piston (8) matches the tank (2). The tank cover (3) is sealed on the tank (2) by means of a screw bolt. The present irrigation and spraying system has a simple structure and, due to the effectiveness of dissolving a uniform concentration of solid fertiliser in water, is suitable for producing irrigation solution with a uniform concentration of solid fertiliser, effectively preventing the irrigation solution from having a high concentration of fertiliser as a result of the inconsistent concentration of aqueous fertiliser.La présente invention concerne un système dirrigation et de pulvérisation basé sur le levage dun véhicule aérien sans pilote, ledit système comportant principalement : une plaque de base en L (1),
