The purpose of double eyelid surgery is to make the eyes attractive and bright. The procedure is chosen according to the shape of the eyes and local conditions: 1. If there is much fat under the eyelid, commonly known as “swollen eyes”, or if there is laxity of the skin of the upper eyelid, it is recommended to use classical incision to properly remove excess skin and fat, which is easy to operate under direct vision, and hemostasis is complete. The procedure must be well designed to ensure a successful outcome, and is the main common surgical method with stable long-term results. 2.If there is little fat under the eyelid and thin skin, you can choose micro incision surgery. At present, we mostly use this method, the postoperative recovery is very fast, and the long-term efficacy is stable. In case of unsatisfactory surgery, it is almost unaffected when dealing with it again. 3. The suture method is not long-lasting, the buried thread method is easy to be infected, and the thread knot often affects the appearance when the eyes are closed, so we no longer use these methods. 4, other cases: (1) if accompanied by inner canthus deformity, can be corrected at the same time, then it is recommended to choose the classic incision method. According to their own conditions to decide whether to make “charming eyes”, looks charming, is more popular. (2) If there is a small canthus, the outer canthus can be enlarged. (3) If there is ptosis, the ptosis can be corrected at the same time. (4) Special types of eyes, such as the so-called “thin eyes”, “triangular eyes”, “mandarin duck eyes”, “eight eyes” and “almond eyes”, can be corrected at the same time. (4) Special types of eyes, such as the so-called “thin eyes”, “triangular eyes”, “mandarin duck eyes”, “eight eyes”, “almond eyes”, etc., need to be corrected at the same time.