The invention discloses a craniocerebral operation scalp automatic bleeding stop device which comprises a scalp clamp and a scalp clamping gun. The scalp clamp is arranged in the scalp clamping gun and matched with the scalp clamping gun. The device is convenient to operate, labor intensity of medical staff is reduced, medical resources are saved, the front end of the scalp clamp is flat, injury caused by excessive clamping force to normal, severe swelling and contracture scalp tissues are relieved, secondary injury to a scalp of a patient is avoided, skin cutting speed is improved, bleeding amount of the patient is decreased, patient life is protected, the scalp clamp does not directly contact with instruments and a hand of an nurse, hands of the medical staff cannot be accidentally injured in the clamping process of the scalp, personal safety of the medical staff is protected, and the working efficiency of the medical staff is improved.