Generally speaking, it is not normal to have a little pain when having a bowel movement more than forty days after anal fissure surgery. For patients suffering from anal fissure, usually about 4 weeks after the operation, there is basically no pain in bowel movement. If there is still pain more than 40 days after the operation, most of the patients will consider that the wound is not healing well, or caused by the dryness of bowel movement. If the symptoms of stool pain occur, first of all, we should pay attention to a light diet, eat more fiber-rich foods, eat more fresh vegetables and fruits, such as celery, cabbage, apples, bananas, etc., drink more water, appropriate exercise to promote defecation, eat less spicy and stimulating food. Take a warm water sitz bath to keep the anus and the surgical wound area clean and dry to facilitate recovery. If the wound heals poorly, local pain can occur, observe whether there is infection, local inflammatory secretion oozing, etc.; if there is a wound healing fresh tissue weakness, underwear friction, etc. caused by; dry stools, dry knots on the healing tissue stimulation tugging can also cause pain, or even bleeding and so on. When the above symptoms occur and the pain is not relieved, you should consult a doctor in time to clarify the cause of the disease and give treatment or corresponding treatment as early as possible.