Pre-operative attention 1, four hours before surgery, please do not eat a full meal. 2.Wash the underarm area with soap again before going out. 3.Please do not use any cosmetics or maintenance products. 4.Please wear loose shirts, do not wear coveralls. 5.Cleaning: the day before the surgery, clean the whole body, especially the underarm area. 6.Pre-operative need to do a blood routine, coagulation time check. Postoperative attention 1, it is advisable to avoid smoking, alcohol, stimulating food will affect the wound healing. 2, the wound should use elastic gauze to compress the surgical site to prevent swelling and bruising, and to make the skin after surgery to be adhesive recovery, elastic gauze, please do not take off, if it is too tight to feel hand numbness and discomfort, you can ask family members to assist in loosening the heavy elastic gauze and then re-tied on. 3, postoperative shoulder to limit the activities: hands do not raise above the shoulders, do not lift heavy objects, do not pull the bus ring, do not support the body when sitting up from the bed, bathing, dressing and shampooing is best to have someone to assist. Activities below the elbow, such as eating, washing, writing are not restricted. 4. It is advisable to wear a shirt with front buttons and keep the arms in a slightly curved position to prevent over-clamping of the armpits and rubbing of the wounds and breaking of the skin. 5. Avoid strenuous exercise within 4 weeks after surgery.