Winter jujube tree pesticide spraying device

The utility model discloses a pesticide spraying device for winter jujube trees, and relates to the technical field of pesticide spraying devices. The liquid storage tank comprises a liquid inlet and a liquid outlet, a stirring assembly is arranged in an inner cavity of the liquid storage tank, a pulley assembly is arranged at the bottom of the liquid storage tank, a grip is fixed on the liquid storage tank, the liquid storage tank is connected with one end of a water pipe, the other end of the water pipe is fixed with a spray head, a water pump is arranged on the water pipe, and a supporting piece is arranged at the bottom of the water pipe. The supporting piece is used for supporting the water pipe to a preset height, the height of the supporting piece is adjustable, the supporting piece comprises a hollow rod, a screw, a first thread sleeve, a first motor and a transmission piece, the screw is located in the hollow rod, the bottom end of the screw is rotationally connected with the base wall, the first thr