A kind of blade improvement of weeder, the blade have the improvement of the opening on both sides and the blade bevel edge that is open, thereby allow the blade on positioning what weeder, weeding process is more efficiently than old-fashioned blade. 一種除草機之刀片改良,該刀片有兩邊之開口和開口刀刃斜邊之改良,藉此讓該刀片在定位於除草機上,除草過程比舊式刀片更為有效率。