Legal basis: Article 33 of the Regulations on the Administration of Medical Institutions stipulates that when a medical institution performs surgery, special examination or special treatment, it must obtain the consent of the patient, and his family members or relevant personnel should agree and sign; If the patient's opinion cannot be obtained, it shall be agreed and signed by the family members or relevant personnel; When patients' opinions cannot be obtained and no family members or related personnel are present, or other special circumstances are encountered, the attending physician will put forward a medical treatment plan, which will be implemented after being approved by the person in charge of the medical institution or the authorized person in charge. Therefore, daughters have the right to sign. As long as they are immediate family members, usually only one family member can sign. Signing is to prove the obligation of informing, and at the same time, signing does not affect the responsibility of medical behavior. The spouse or blood relatives of the elderly are the best signers in turn. If the elderly are widowed and have no relatives, they shall be signed by their communities and village committees.