A hollow golf club head comprises a face part having a face for striking a ball, and a main body extending rearward from the face part. The main body is provided with a low-rigidity zone which comprises through holes and connecting portions arranged alternately along a peripheral edge of the face. The through holes penetrate the main body from the outside to the inside of the main body. The connecting portions extend in the front-back direction of the head, and include an oblique connecting portion comprising an oblique part inclined with respect to the front-back direction.