A bush cutter blade according to the present invention includes a base plate (10) a reel (2) installed on the base plate (10) a resin string blade (7) wound around the reel (2) a string guide (6) which detachably secures the resin string blade (7) to the base plate (10) and a metal blade (8) installed in such a way as to protrude outward from the base plate (10), wherein the resin string blade (7) is fixed to the string guide (6) in such a way as to protrude further outward than an outermost periphery of the metal blade (8).