Insecticidal spraying device for forest diseases and insect pests

The invention relates to the technical field of spraying, in particular to a forest pest killing spraying device which comprises a plurality of spraying assemblies, the spraying assemblies are vertically distributed, each spraying assembly comprises a main plate and two side plates, the main plates and the side plates are fixedly connected through a plurality of torsion spring hinges, water cavities are formed in the main plates and the side plates, and the water cavities are communicated with the main plates and the side plates. A plurality of avoiding grooves are formed in the inner side faces of the main plates and the inner side faces of the side plates, screw holes communicated with the water cavity are formed in the inner wall faces of the avoiding grooves, atomizing nozzles are in threaded connection with the interiors of the screw holes, connecting pipes communicated with the water cavity are installed on the opposite end faces of the main plates, and elastic pipes are installed between the connecting