Corn disease and insect pest medicine liquid spraying device

The utility model discloses a corn disease and insect pest liquid medicine spraying device which comprises a liquid medicine box, a liquid injection opening formed in the upper surface of the liquid medicine box is detachably connected with a box cover through threads, water spraying pipes are arranged on the two sides of the liquid medicine box, and a plurality of evenly-distributed atomizing nozzles are arranged on the side walls of the two water spraying pipes. A pesticide liquid box is carried on the back to move, pesticide liquid in the pesticide liquid box is fed into water spraying pipes on the two sides through a water pumping assembly, the pesticide liquid is sprayed to corn stalks on the two sides of the body from a plurality of atomizing nozzles, when crops are low, the water spraying pipes are taken out of a first pipe clamp and clamped into a second pipe clamp, and the two water spraying pipes are horizontally placed for spraying; by means of the mode that the spraying rod is fixed to the liquid