Flattening of stool after endoablation may be due to postoperative infection, anal stenosis, anal polyps and other reasons. 1. Post-operative infection: after internal ligation and external stripping surgery, if the care is not proper, it will cause wound inflammation, resulting in localized swelling, which will cause the patient’s stool to be squeezed when defecating, resulting in the situation of stool, accompanied by pain. 2. Anal stenosis: after hemorrhoid surgery, if the wound recovery is poor, it may lead to anal stenosis, resulting in the patient’s bowel movements to become flat while defecation pain, some patients may have anal fissure. 3. Anal polyps: inflammatory stimulation may lead to the emergence of anal polyps, some patients will have blood in the stool, due to the obstruction of the polyp will lead to the stool is not shaped, flat and so on. Symptoms may have other causes, a short time can not be relieved, should promptly consult a doctor, under the guidance of a professional physician standardized treatment.