Although double eyelid cutting is one of the routine eye surgery in plastic surgery and cosmetic surgery, it is also risky, and the risk is mainly reflected in the following three aspects: First, anesthesia accident, double eyelid cutting is local anesthesia surgery, that is, local anesthesia drugs are injected into the skin through a syringe. Although relatively safe, but there are a very small number of patients will have an allergic reaction to the local anesthetic drugs, the lesser case may be skin rash, local pain, the more serious may produce anaphylactic shock and death. Second, subcutaneous hematoma or subcutaneous bruising, do double eyelid surgery process will inevitably damage the blood vessels under the skin, sometimes intraoperative hemostasis is not complete will lead to postoperative swelling of the eyelids, and subcutaneous hematoma may be formed. Infection, after all, it is incision surgery, bacteria and viruses may take advantage of the opportunity to enter, which may cause local redness, swelling, heat, pain symptoms, may need oral antibiotics to treat. If the infection spreads to the whole body with the blood, the patient may have fever, and then need to use intravenous antibiotics to treat.