You can choose lumbar anesthesia or local anesthesia for hemorrhoid surgery. Each of the two types of anesthesia has different characteristics. Local anesthesia is the injection of anesthetic into the subcutaneous tissue around the anal skin, such as in the bilateral sciatic rectal fossa, in order to block the anal nerve so that the function of nerve conduction disappears and produce local anesthesia at the injection site. This method is relatively simple, with few intraoperative reactions and postoperative complications, and is suitable for surgery around the anus, the anal canal and the lower rectum, and it has the disadvantage that the anesthetic effect is slightly worse. Lumbar anesthesia is the injection of anesthetic into the 4/5 interspace of the lumbar spine to produce anesthesia in the plane below the lumbar spine, that is, the lower body will produce the effect of anesthesia. The advantage of this anesthesia is that the anesthetic effect is better and the patient does not feel pain during the surgery. Its disadvantage is that there are more complications after the surgery, and some patients can have poor urination and defecation after the surgery, requiring frequent catheterization. Sometimes complications such as dizziness can also occur.