PROBLEM TO BE SOLVED: To provide a rotating plate 20 of a cutter 10 for a brushcutter, the rotating plate that can maintain high strength even if heated when multiple blades 30 are fixed to the rotating plate 20 by brazing, respectively.SOLUTION: Multiple notches are formed in an outer peripheral edge of a rotating plate 20, and a blade fixing part 25 is set on a portion at the rear side in the rotation direction among portions for sandwiching each notch 24 from both sides of the circumferential direction, and also multiple through holes 27 for heat dissipation are formed in the position between blade fixing parts 25 next in the circumferential direction to each other. Each through hole 27 for heat dissipation has at least a portion overlapped in a radial direction to the blade fixing part 25, and has a shape for making a part 28 of the rotating plate 20 outside the radial direction from the through hole 27 for heat dissipation continue in the circumferential direction.
