Local anesthesia must be used for double eyelid cutting for two main reasons: 1. The doctor will draw a blepharoplasty line on the upper eyelid before the operation. During the operation, the doctor will cut the upper eyelid along the blepharoplasty line, take out part of the supraorbital fat, and then suture the upper eyelid one layer by one layer. The whole process sometimes requires the patient to open or close his eyes, only in this way can the doctor observe the effect of both eyes in the dynamic, whether it is equal, symmetrical, beautiful. 2, in the completion of the operation, the doctor will let the patient sit up, using a mirror to observe the immediate effect of the double eyelid, if the patient is not satisfied with the immediate effect of the double eyelid, or have a request for adjustment, you can immediately communicate with the doctor, and then according to the patient’s request for fine-tuning the If the patient is not satisfied with the immediate effect of the double eyelid or has a request for adjustment, he or she can communicate with the doctor immediately and the double eyelid effect will be fine-tuned according to the patient’s request. General anesthesia is also called general anesthesia, patients are asleep during general anesthesia, their eyes are closed tightly and they can’t cooperate with the doctor’s many requests during the operation, so they can’t complete the double eyelid surgery.