Plant protection machine

The utility model provides a plant protection machine which comprises a crawler walking mechanism and a remote controller, and the crawler walking mechanism is provided with an electric control box and a pesticide box used for containing pesticide. A lifting stand column is vertically arranged on the side wall of the edge of the pesticide box, a transverse rod is horizontally arranged on the top of the lifting stand column, a pesticide conveying hose is arranged on the transverse rod, and the pesticide inlet end of the pesticide conveying hose is communicated with a pesticide outlet of the pesticide box. A plurality of downward sprayers are uniformly arranged on the part, on the cross rod, of the pesticide conveying hose, and electromagnetic valves are arranged in the sprayers; a wireless signal transmission device is arranged on the crawler walking mechanism, the wireless signal transmission device is electrically connected with an electrical part on the crawler walking mechanism, and the wireless signal tra