Double eyelid cutting is a more common plastic surgery, although it is a minor surgery, but there are certain restrictions on the age. The best age for surgery is after the age of 18. This is because after the age of 18 the human body is basically mature and children are relatively independent in their thinking, and now, as the standard of living improves, the body develops and matures earlier. If people under the age of 18 request double eyelid surgery, they need their parents to sign and understand all the risks of double eyelid surgery before they can have the surgery. Minors are not fully developed and double eyelids may change with age. If double eyelid surgery is performed too early, the final result will be poor and may also cause some complications or sequelae, as follows: 1. hematoma: some people may have hematoma after surgery, and those with severe hematoma may need surgery to drain the blood; 2. inflammation: related to improper surgical methods, unclean medical equipment or postoperative incisions 3. asymmetry of the eyelids on both sides: the curvature of the eyelids is inconsistent, the shape is different, and the size of the eyes is not the same; 4. eye discomfort: the eyes may be dry, red, swollen, and have difficulty blinking.