The present invention can be up to grass roots out to delay the re- germination of grass , after cutting at the same time , to provide a brush cutter with a rotating cutting blade which can be finished beautifully . SOLUTION A rotating cutting blade 3 is mounted on the bush cutter body 1 , the cutting edge 4 provided on the outer periphery to form a blade array of V-shaped bent at the same angle in the vertical direction alternately . [ Selection Figure ] Figure 1【課題】草の根切れまででき、草の再発芽を遅らせ、同時に刈取り後、綺麗に仕上げることができる回転刈刃を備えた刈払機を提供する。【解決手段】刈払機本体1に装着される回転刈刃3であって、外周に設けた切刃4は交互に上下方向に同じ角度で折り曲げV字形状の刃並びを形成する。【選択図】図1