Double eyelid surgery, also known as blepharoplasty, is based on the aesthetic principle of surgically modifying and reorganizing the physiological structure of a single eyelid to give it the appearance of a heavy eyelid, making the eyes more bright and flexible and the appearance more handsome and clear. There are three common surgical methods, including the buried double eyelid, Korean three-dot double eyelid, and full-cut double eyelid. The nano scarless double eyelid surgery is more of a gimmick, the essence is the buried double eyelid, through the suture method, directly buried polymer suture between the skin and the lid plate, so that the upper lid skin with the lid plate adhesion, the formation of double eyelid. It is mainly suitable for young people with large lid fissures, thin eyelids, no bloating, no laxity of the eyelid skin and normal tension, and no inner canthus. If the upper eyelid is thicker and heavier, the effect of the buried double eyelid will be even shorter. If you want to have permanent double eyelids, you can choose full-cut double eyelids or Korean three-dot double eyelids, but it is recommended that you go to a professionally qualified medical institution to guarantee the safety and results of the surgery. If the surgery fails or is not ideal, it will bring a lot of difficulties to repair later.