Korean double eyelid is a popular double eyelid method at present. This method is to remove a small amount of fat at a point before catgut embedding, and then pass the double eyelid method between catgut embedding and incision. Korean-style double eyelids can not only remove excess tissue and fat under the eyes, but also cause minimal damage during surgery, and there is no need to remove stitches after surgery. Compared with embedding thread, double eyelid is more natural, simple to operate and quick to recover after operation. If you are not satisfied with the postoperative effect, you can completely restore the original state. 2. The method of embedding thread solves the problem of how a single eyelid becomes a double eyelid with less trauma. The ligature line is fixed between the upper eyelid dermis and the levator palpebrae aponeurosis in front of the tarsal plate or the upper edge of the tarsal plate, and the appearance of the fold is natural. This method to solve the problem of how a single eyelid becomes a double eyelid has the advantages of no incision, little postoperative tissue reaction, no influence on work and easy acceptance by patients. The disadvantage is that the upper eyelid folds tend to become shallow and narrow. If the case is not properly selected or the skills are not well mastered, the upper eyelid wrinkles will easily disappear. The knot is easy to loosen, which leads to the failure of the operation. 3. Minimally invasive double eyelid Minimally invasive double eyelid is to make 2-3 tiny incisions 1 mm on the upper eyelid skin. After extracting fat and tightening the skin, natural, permanent and lifelike double eyelids can be formed. At the same time, it can remove the excess adipose tissue inside the eyelid, and it can be permanently molded without embedding thread. There is no trace after operation, and it is more natural and beautiful to close your eyes. Minimally invasive double eyelids are suitable for young patients with less fat and tight skin.