As a result of the packaging effect of double eyelid surgery in the plastic surgery market, there are many so-called “ecological double eyelid”, “polymer double eyelid”, “nano scarless double eyelid”, “biological welding double eyelid” and so on. “In fact, the double eyelid surgery is nothing more than buried lines, small incisions and full cuts. The nano scarless double eyelid on the market is more of a propaganda, in fact, mostly refers to the double eyelid buried line method, divided into continuous buried line and positioning buried line two, commonly used in clinical positioning buried line method, short recovery time, no hospitalization, the first day after surgery continuous ice compress, reduce edema, but because it is impossible to do 24 hours without interruption ice compress, compress 1 to 2 times a day, a 30 to 60 minutes, generally about 7 days on The swelling can be reduced in about 7 days, and it can be almost natural in about 1 month. The procedure is usually performed using a three-point positioning procedure, where three points are designed and positioned on the eyelid, and the epicanthalmos tendon membrane and subcutaneous tissue are sewn together with non-absorbable sutures, without incision, leaving only a few traces of suture points on the eyelid, and the double eyelid can be formed when the eyes are opened. It is also important to note that proper eye opening and closing exercises can be performed after surgery to allow the skin to form memory points and make the sutures adhere more firmly so that the eyelids appear more natural and beautiful after the edema is eliminated. However, nano scarless double eyelid is not a wide audience, suitable for people with thin eyelids, no flaccidity and no excessive fat. With the passage of time and the different physical conditions of each person, double eyelids will slowly become lighter or even disappear.