1.Please come to the hospital for admission at 7:40 a.m. on January; 2.Someone must accompany you on that day (avoid accompanying people who are too old to move conveniently, and push the patient to the ward with a wheelchair or flat cart after treatment); 3.Avoid eating soy products and other gas-producing foods the night before, do not eat or drink on that day, and hold your urine well; 4.Ladies should avoid menstruation; 5.Patients with hypertension should drink and take their medicine when they come; 6 Patients who use anticoagulants or blood-activating drugs should consult with the relevant departments to stop the drugs before surgery; 7. They should tell the surgeon in detail whether they have a history of allergic drugs or other allergies, and the drugs they have taken recently; 8. If there are special circumstances that prevent them from coming as scheduled, please inform them two days in advance, and make the next appointment one week in advance 9.