1.Do not remove the armpit hair by yourself before the operation, the medical staff will shave the armpit hair with a disposable shaver on the day of the operation. 2.Do not use antiperspirant or new perfume in the armpit for a week before surgery to avoid skin irritation or allergic reaction. 3.You can take a full body bath at home on the day before surgery or the day before, because you can’t take a full body bath within 2 days after the surgery until the removal of stitches. 4.You can eat normally before surgery, but do not drink alcohol or overeat. 5.Change into a wide cardigan before surgery to facilitate the dressing of the wound after surgery. 6.People with scars should not have this surgery. Please inform the doctor in advance. 7. Female patients cannot have this surgery during menstruation. Do not deliberately conceal your menstrual history to avoid accidents because you are in a hurry for surgery. 8. Patients who have not fully considered this procedure despite the doctor’s full explanation and information should not undergo this procedure. 9.Both the doctor and patient should leave their correspondence with each other before the operation and keep it open in case of necessary contact. 10.Please arrive on time for your appointment. If you fail to arrive, the surgery may be postponed due to other surgeries. 11.Pre-operative laboratory tests are routinely performed before surgery to exclude infectious diseases, which is beneficial to both doctors and patients. 12.Oral antibiotics are routinely taken on the day before surgery until the 6th postoperative day as prescribed by the doctor.