To prevent scarring after double eyelid surgery, it is important to apply cold compresses, keep the wound clean, avoid excessive use of the eyes, and eat a light diet. 1. Cold compress can effectively avoid double eyelid edema, hematoma formation and thus lead to poor healing. 2. Keep the wound clean and do not touch the wound with unclean hands to avoid poor healing due to infection. If there is any blood crust or secretion on the wound, use saline to wipe it. 3. Avoid using your eyes for one week after the surgery and blink more often. In addition, it is best to keep your head high and feet low when you are resting in bed, to avoid swelling caused by the low position of the head, which in turn leads to poor wound healing. 4. Eat less spicy and stimulating food to avoid poor wound healing. Doing double eyelids need to go to regular hospitals or institutions, postoperative precautions need to follow the doctor’s instructions.