To provide a suture needle that excels in penetrability by grinding.

In the suture needle 101 in which the tip end 103 is formed into a nearly pyramid shape by grinding it, a surface 111 has a circular arc grinding grain 113 that forms a nearly 45 degree angle in the longitudinal direction of the tip end 103. A grinder having a flat grinding surface is rotated, so that grinding is carried out while the side face of the tip end 103 of the suture needle 101 is pressed against the grinding surface. A bending stress that the suture needle 101 receives in the rotary direction at the time of grinding is small, providing a uniformly ground surface 111. In addition, the grinding grain 113 of the surface 111 is in a direction crossing the longitudinal direction; therefore, the cutting edge 112 on both sides of the surface 111 is set, while resistance of the grinding grain 113 is comparatively small, making the superior penetration at the tip end.