To provide a suturing needle which can improve the piercing property by reducing the piercing resistance when piercing the biological tissue.

In this suturing needle, the blade section 5 of the needle tip section 3 of the needle main body 1 is formed to have a triangular or other polygonal cross section. The needle main body is formed by using a blast-processed needle material for which a fine uneven section 13 is applied by blasting on the outer peripheral surface of the needle material. The blade section 5 of the needle tip section has a cutting blade 6. The cutting blade is formed by polishing a ground cutting blade 60, which has been formed by grinding, by the jetting process of a polishing material 7 for which an abrasive grain 7b is blended and dispersed in a base material 7a consisting of an elastomer. By jetting the polishing material to the blade section, burrs or the like which are formed on the ground cutting blade are thoroughly removed, and at the same time, the blade section is polished, and sharpening is keenly performed, and the cutting blade with the cutting sharpness of which has been increased is formed.