The doctor's signature should reflect the three-level doctor responsibility system. Third-level physicians refer to residents, attending physicians and doctors with professional and technical post qualifications above deputy chief physician. In tertiary hospitals, the signature of the "department director" column on the first page of medical records can be signed by the doctor in charge of the ward, and other hospitals must be signed by the director himself. If there are special circumstances, you can designate the doctor in charge of the ward to sign.