MILL BLADE AND MILL DEVICE

To provide a mill blade and a mill device cleanable with an inexpensive constitution.SOLUTION: A mill blade comprises a disk-like disk body 150 and a disk-like blade part 151 integrated on one surface side of this disk body 150, and the disk body 150 comprises a groove part group 154 composed of a plurality of groove parts 153, 153, 153 and 153 formed so as to become thin and shallow toward the outer peripheral side, and the blade part 151 comprises a front side curved edge part 156 and a cutter blade 157 formed along the groove part 153, and the blade part 151 is constituted of a construction material higher in hardness than a construction material for constituting the disk body 150. Only the blade part 151 is formed of a hard construction material, and the disk body 150 can be constituted of a construction material easy in processing,...