Circular cell piece-making tool for culturing pearls

The invention discloses a circular cell piece-making tool for culturing pearls. The tool consists of a cylindrical handle, a piece-guiding rod, a piece-guiding rack and a cutter, wherein the cutter which is cone-shaped is arranged at the lower end of the cylindrical handle, the upper end of the cutter is connected with the cylindrical handle, the lower end of the cutter is provided with a circular cutter point, a groove which can penetrate through the circular cutter point from top to bottom is arranged in the cylindrical handle, and the piece-guiding rod is arranged in the groove. The pieces made by the tool are circular and have the same size, the transplanted pieces can be closely attached to the surfaces of the pearl cores, more circular high-quality pearls are formed after secretion of nacres is performed; and however, the pieces made by the conventional tools are square and different in size, tips and long square corners of mantles are left after cutting, and more prism and tail pearls are formed after transplanting and pearl culturing are performed. Particularly, when cell pieces are made, by using the tool, a small amount of epidermic tissue is damaged, the pieces are more active, the secretion of nacres is promoted, and the making of cell pieces and transplanting and culturing of pearls are realized.