Whether it is painful to cut the eyelids or to bury the threads cannot be generalized, but depends mainly on the patient’s own pain sensation. Generally speaking, both will be anesthetized before the operation, and there will be no obvious pain during the operation, so patients don’t have to worry too much, and most of the population can tolerate it. The most important thing is that the patient should choose the procedure that suits his or her eye condition. Submerged eyelids are made by burying non-absorbable sutures under the skin, artificially causing the upper eyelid tendon membrane to form an adhesion with the skin tissue, so that when the eyes are opened, the upper eyelid muscle contracts and the upper eyelid tendon membrane pulls on the skin to form double eyelids. Surgery is less traumatic, only three stitches are needed, and there are only a few stitches on the surface of the skin. After surgery, the patient may feel slight discomfort, and generally follow the doctor’s instructions to take good care of the patient. The buried thread method is suitable for young people, without upper eyelid skin laxity, and upper eyelids are not puffy eyes, if it is puffy eyes need to do a full incision, remove muscle and fat. Although it is easy to perform and quick to recover from the trauma, the disadvantages of the buried thread method are obvious: it is easy to form single eyelids again due to the dislodging of thread knots, and the maintenance time is not very long. Double eyelid surgery, or blepharoplasty, is a surgery that changes the structure of the eyelid tissue and reshapes the shape of the eyelid to form a new upper eyelid crease. The procedure is minimally invasive and minor, with a low difficulty factor, and is essentially painless. There is also usually a small amount of pain and swelling after the surgery, but this discomfort gradually disappears as the trauma of the eyelid surgery heals.