The invention discloses a sharp-angled forming cutter which comprises a cutter bar and a cutter head formed at one end of the cutter bar, wherein the cutter head is provided with a first cutter tooth,a second cutter tooth and a third cutter tooth; the first cutter tooth is sequentially provided with a first arc-shaped cutting edge protruding outwards and a first axial cutting edge starting from the end part of the cutter head; the second cutter tooth is sequentially provided with a vertical second axial cutting edge and a second arc-shaped cutting edge protruding outwards and a vertical second radial cutting edge starting from the end part of the cutter head; and the third cutter tooth is provided with a third axial cutting edge. According to the sharp-angled forming cutter, through cooperation of the first cutter tooth, the second cutter tooth and the third cutter tooth, processing is carried out in a subsection manner and forming is carried out simultaneously, and high efficiency and precision are realized; the cutting edges of the first cutter tooth and the second cutter tooth are transitioned through the arc-shaped cutting edges, firm and durable and unlikely to wear or crack.