It is illegal for a doctor to change the surgical plan without permission. It is a serious fault if the patient and his family change the medical plan without knowing it, which violates the medical routine and causes the patient to die of si due to improper handling. Articles 54 and 55 of China's Tort Liability Law respectively stipulate: "If a patient is damaged in the diagnosis and treatment activities and a medical institution and its medical staff are at fault, the medical institution shall be liable for compensation." "Medical personnel should explain the ice situation and medical measures to patients in medical activities. If surgery, special examination and special treatment are needed, the medical staff shall promptly explain the medical risks and alternative medical programs to the patients and obtain their written consent; If it is not appropriate to explain it to the patient, it shall explain it to the patient's close relatives and obtain their written consent. Medical institutions shall be liable for compensation if medical personnel fail to fulfill the obligations stipulated in the preceding paragraph and cause damage to patients.