Four months after the internal ligation and external peeling surgery, there is a blockage in the anus, stinging pain and falling, which may be related to the postoperative reaction, constipation, perianal abscess and other conditions. 1. Post-operative reaction: internal ligation and external stripping surgery belongs to the treatment of mixed hemorrhoids surgery, due to the surgical process will stimulate the anal defecation reflex organs and muscle tissue, resulting in a slight sense of swelling and blockage in the anus, with the passage of time and the recovery of the wound tissue, the symptom will be gradually relieved, usually about six months can return to normal. 2. constipation: due to the mixed hemorrhoid surgery, the patient’s anal area will appear pain, the patient may have bowel fear and other manifestations, coupled with the lack of attention to diet and lifestyle management, it is very likely that constipation will be formed, resulting in anal blockage and stinging pain and other symptoms. 3. Perianal abscess: If you don’t pay attention to the cleanliness and hygiene of the anal area after the surgery, it is very likely to cause infection, and in serious cases, perianal abscess will be formed, resulting in tingling and anal swelling and other symptoms. The above situation, it is recommended that the patient should consult a doctor in a timely manner, follow the doctor’s instructions to do a systematic examination, to clarify the cause of the disease, and give relevant treatment as soon as possible, to avoid adverse effects on the body.