Anal edema after hemorrhoid surgery is one of the common complications because there was normal blood and lymphatic circulation before the incision was made, and after the hemorrhoid is cut out, this circulation is blocked and the skin on both sides of the incision is subjected to greater circulatory pressure. Patients who have poor bowel movements or squat on the toilet for a long time often develop edema of the skin around the anus next to the incision. During the surgery, edema often occurs even though you want to prevent it from happening. Usually, you should eat more vegetables and fruits and keep your bowels open to reduce the stimulation of the anus, reduce pain, and prevent edema from occurring. As the wound continues to heal, the edema will gradually become smaller and disappear slowly.