Racket string

The utility model relates to the technical field of wire stocks, in particular relates to a racket string used for a tennis or badminton racket. The racket string is provided with a compound core wire and a protection layer obtained in an impregnation manner, wherein the compound core wire is composed of a sub-wire and a knitted layer knitting and covering the sub-wire. The protection layer of the racket string is not only attached to the outer periphery of the compound core wire, but also soaked in the compound core wire and is combined closely; and therefore, the performance of the wire stock is stable; and knitted grains of the compound core wire are still reflected on the surface of the protection layer and the texture is clear; in other words, a rough surface is formed on the surface of the protection layer; and the rough surface when being combined with the racket for use is capable of enhancing the frictional force with a ball so as to improve the correctness of direction control after batting, and sim