Plant removal device and plant removal method

The invention relates to the technical field of operation and maintenance, and particularly discloses a plant removal device and a plant removal method. The plant removal device comprises a liquid containing part and a liquid injection part, wherein the liquid containing part is provided with a liquid containing cavity for containing a herbicide, a cover plate is arranged above the liquid containing cavity, the cover plate is used for covering the liquid containing cavity, a hinge structure is arranged between the cover plate and the liquid containing cavity, the lower side of the liquid containing cavity is connected with the liquid injection part, the liquid injection part is provided with multiple liquid injection pipes communicating with the liquid containing cavity, a bent part is arranged at the end, away from the liquid containing part, of each liquid injection pipe, each bent part comprises a sharp insertion structure and a concave structure, and a liquid insertion port is formed in each concave struc