Although there are various surgical methods for double eyelids, and the names of various surgical procedures are endless, such as the classification of surgical methods, in fact, there are only two types of “incision” and “non-incision”, “Korean”, “minimally invasive”, “three-point”, etc. belong to the “incision method”, only in the number and length of incisions are different; “buried wire”, “scarless welding”, “nano method”, etc. belong to the “non-incision method”, only the materials used Different materials are used. No matter which method is used, in order to form double eyelids, the eyelid line must be attached to the front fascia of the lid, so that when the eye is opened, the lid is lifted and the eyelid line is lifted, thus forming double eyelids. The width of the eyelid is usually around 7mm, and the width of the lid is usually around 7mm, so it is important to pay attention to the width of the lid when designing the eyelid, and the width of the design should not exceed the width of the lid. If the width of the eyelid is only 7mm, the design will be 8mm wide. In addition, if the designed width is appropriate but the suture is too low to the lid, for example, if the designed width is 7 mm and the suture is sewn at 4 mm from the lower edge of the lid, this will artificially cause 3 mm of the skin to curl forward and form a “flesh strip”. In addition to the skin, the fatty lacrimal muscle is also a major cause of “flesh strips” after double eyelid surgery, which is more common with the “non-incision” method; because the eyelid line is slightly depressed, the lacrimal muscle in front of the lid plate is not removed, which makes it appear bloated. For those who have good elasticity of the upper eyelid skin and thin eyelids, “non-incision” or “minimally invasive” or “three-point” incision can be chosen; for those who have swollen eyelids, generally there is a lot of fat in the orbital septum combined with hypertrophy of the rotavirus muscle, so when choosing surgery, do not blindly pursue “minimally invasive” or “three-point” incision, full incision may be the best choice.