The invention discloses a method for manufacturing a racket frame of a stringing racket, which comprises the following steps of: (1) forming and hardening an inner frame piece which is of a hollow structure, enabling the inner frame piece to be concave outwards and convex inwards, forming a groove in the outer wall surface of the inner frame piece, and forming a reinforcing rib on the inner wall surface of the inner frame piece; (2) laying carbon fiber cloth in the groove, and enabling the carbon fiber cloth to at least partially wrap the outer surface of the inner frame piece; and (3) placingthe inner frame piece wrapped with the carbon fiber cloth into a mold, so that the carbon fiber cloth is heated, cured and formed into an outer frame piece, forming a first threading hole in the outer frame piece, and forming a second threading hole in the inner wall face and the outer wall face of the inner frame piece in a penetrating mode, wherein the second threading hole and the first threading hole are oppositely communicated with each other. The inner frame piece is formed and hardened firstly, then the carbon fiber cloth is laid, and the outer frame piece is formed in a curing mode, so that the racket frame is manufactured and formed in a two-time forming mode, the reinforcing ribs can form a stable shape, and the overall rigidity and torsion resistance of the racket frame are effectively improved.