The invention discloses a simple agricultural spraying device. The simple agricultural spraying device comprises a push handle, guide wheels, a cart, a projector light, a pesticide preparing tank, a water storage tank, a temperature regulator, a pesticide feeding pipe, a stirring device, a level gauge, a pesticide delivery pipe and a pressurizing device. One side of the cart is provided with the push handle, the bottom end of the cart is provided with the guide wheels, the cart is provided with a display device, and the front end of the cart is provided with a first camera and the projector light; the pesticide preparing tank is arranged on the cart, the inner wall of the top end of the pesticide preparing tank is provided with a second camera, the top end of the pesticide preparing tank is provided with the pesticide feeding pipe, the inside of the pesticide preparing tank is provided with the water storage tank, and the bottom end of the water storage tank is provided with a water outlet pipe; the stirring device, the temperature regulator and the pesticide delivery pipe are arranged inside the pesticide preparing tank; a spray nozzle is arranged at the outlet end of the pesticide delivery pipe, and the pesticide delivery pipe is provided with the pressurizing device. The simple agricultural spraying device achieves convenience of pest control through pesticide spray in regions without concentrated fields such as hilly areas, facilitates convenience, reduces manual output, eases the burden for peasants, improves the working efficiency and avoids waste of pesticides.