Spraying device for microbial pesticide

The utility model provides a spraying device for microbial pesticide, which relates to the technical field of spraying and comprises a connecting pipe, the upper surface of the connecting pipe is fixedly connected with a connector, the connecting pipe is provided with a fixing pipe in a matched mode, and the outer surface of the fixing pipe is fixedly connected with two limiting rings close to the bottom. An outer threaded cylinder is fixedly connected to the position, close to the middle, of the outer surface of the fixing pipe, a fixing plate is fixedly connected to the upper surface of the fixing pipe, a plurality of inserting grooves are evenly formed in the outer surface of the fixing plate, clamping grooves are formed in the inserting grooves in a matched mode, and a top plate is arranged on the fixing plate in a matched mode. A plurality of connecting frames are fixedly connected to the positions, close to the edge, of the lower surface of the top plate, the connecting frames of the top plate are inser