The invention provides a scribing wheel, which comprises a circular plate-shaped body part made of sintered diamond, wherein a circular edge within a plane is arranged.Cylindrical shaft portions coaxial with the sintered diamond layer are respectively arranged on the left and right sides of the body part.Cone portions formed with a predetermined angle and coaxial with the outer end parts of the cylindrical shaft portions are arranged on the left and right sides of the body part.The leading edge portion of a blade is formed with the drift angle of the edge of the body part as the predetermined angle.
