The methods of changing a single eyelid into a double eyelid are as follows:

1. Sticking a double eyelid patch can temporarily help, but it will return to a single eyelid after being removed, and it will easily lead to the skin relaxation of the upper eyelid.

2. Embedding double eyelids is a method of sewing suture under the skin, which is simple to operate and has light swelling after operation, but embedding double eyelids has a short postoperative maintenance time and is prone to recurrence.

3. Total double eyelid incision, along the curve of double eyelid designed before operation, cuts the skin, handles the internal orbicularis oculi muscle and fat, and even needs to cut off a loose skin. The surgical trauma is big, the recovery is slow, it takes about one month, and the effect can be described as permanent.