The pain after hemorrhoid surgery is still more than 20 days, may be due to the wound has not fully recovered, improper bowel habits, inflammatory bowel disease and so on. 1. The wound is not fully recovered: due to unhealthy work and rest or infection and other factors, may lead to some patients in the postoperative 20 days the wound is still not fully recovered, in the trauma of infection and edema, the patient may feel the pain of swelling. 2. Improper defecation habits: If the patients have improper defecation habits, such as long defecation time each time or incorrect diet after surgery, consuming too much spicy and stimulating food, it may lead to congestion and edema in the anus, resulting in swelling and pain in the anus. 3. Inflammatory bowel disease: if the patient in the postoperative intestinal infection, resulting in inflammatory bowel disease, rectal mucosa will appear congestion and erosion, at this time due to the inflammation caused by nerve stimulation, the patient can feel pain and swelling. Hemorrhoid patients more than twenty days after surgery, swelling and pain, should be timely to the hospital to check the cause of the disease, as soon as possible to give targeted treatment, to avoid delay aggravation, affecting the normal healing after surgery.