The utility model belongs to an accessory of a cutting device, which is mainly suitable for a leather skiving machine. A knife clip is composed of a basal body and a hardened layer. The basal body is made of good-quality medium carbon spring steel 50CrNiMoVa. The hardened layer is a WC hardened layer manufactured by being sprayed. The width of the WC hardened layer is between 10 mm and 30 mm, and the length is the same with the length of the knife clip. The thickness of the WC hardened layer is between 0.1 mm and 0.50 mm. The knife clip has the advantages of good abrasion resistance, no bending of cutting edge, good toughness and long integral service life.