Disease and pest control pesticide spraying device for seedling raising

The invention discloses a seedling raising disease and pest control pesticide spraying device which comprises a moving device, a conveying device, a pesticide storage box, a spraying pipe and a plurality of spraying heads, the conveying device is installed on the moving device, the liquid inlet end of the conveying device is connected with the pesticide storage box, the liquid outlet end of the conveying device is connected with the spraying pipe, and the spraying heads are arranged on the spraying pipe; a Venturi tube, an air inlet pipe and a flow dividing pipe are arranged at the liquid inlet end of the spraying head, insecticide in the insecticide storage box is conveyed to the Venturi tube through the conveying device, the insecticide is pressurized by the Venturi tube to form high-pressure jet flow to enter the flow dividing pipe, and external air is rolled into the flow dividing pipe through the air inlet pipe; the pressure in the flow dividing pipe is smaller than that of the outlet end of the Venturi