Pesticide spraying machine for large-area plants

The utility model relates to a large-area plant pesticide spraying machine which comprises a vehicle frame provided with wheels and a pushing handle, a pesticide supply device arranged at the upper end of the vehicle frame, a pesticide spraying device located on the front side of a rotating base and provided with a pesticide inlet and a nozzle set, and a driving device located between the pesticide supply device and the pesticide spraying device. The medicine supply device comprises a rotating seat connected with the upper end of the frame and provided with an inclined plane at the upper end,a medicine containing barrel pivoted with the upper end of the rotating seat and provided with a rotating axis perpendicular to the inclined plane, a submersible pump mounted in the medicine containing barrel, and a rotating joint mounted in the center of the upper end of the medicine containing barrel and provided with one end communicated with an outlet of the submersible pump; the other end ofthe rotary joint is commun