Mild anal stenosis after anal fistula surgery can choose conservative treatment, moderate anal mirror can be used to expand the anus or finger expansion, and severe cases need to choose surgical treatment. 1. Mild anal stenosis: the finger can be passed, there are defecation difficulties and constipation and other manifestations, you can choose conservative treatment, such as choosing easy to promote digestion of food to avoid constipation. 2. Moderate anal stenosis: If the anal stenosis is moderate, you can choose anoscope to dilate the anus or fingers to dilate the anus, which can effectively relieve the anal stenosis. 3. Severe anal stenosis: when there is no way for the finger to pass through and there is severe anal stenosis, you usually need to choose surgical treatment, such as anoplasty or flap transfer surgery. How to treat anal stenosis after anal fistula surgery needs to be combined with the individual’s condition, be sure to find a regular hospital in time to receive treatment.