Irrigation pesticide spraying device

The utility model discloses an irrigation spraying device which comprises a bottom plate and a pesticide storage box, the inner side of a cavity is rotatably connected with a rotating shaft and two bidirectional screws, the outer side of each bidirectional screw is sleeved with a driven belt pulley, the two ends of each bidirectional screw are in threaded connection with a support, one end of the rotating shaft penetrates through the bottom plate and is fixedly connected with a hand wheel, and the other end of the rotating shaft penetrates through the bottom plate. The outer side of the rotating shaft is sleeved with a driving belt wheel, and a transmission belt is arranged on the outer side of the driving belt wheel and the outer side of the driven belt wheel. According to the utility model, the hand wheel is rotated and is matched with the rotating shaft, the driving belt pulley and the driven belt pulley, so that the synchronous rotation of the two bidirectional screw rods is controlled, the bracket on the