Anal stenosis usually does not recover on its own. Anal stenosis is an organic condition and the cause usually cannot be removed without treatment. Anal stenosis refers to a decrease in the diameter of the anus as well as the anal canal, resulting in symptoms such as difficulty in defecation, pain, bleeding, and thinning of the shape of the stool. Anal stenosis, which requires a doctor to perform an anal finger test to determine assess whether anal stenosis is actually present, is generally categorized into mild and severe anal stenosis. Mild anal stenosis: anal finger test, can only pass a finger, defecation function is not much impact, do not do special treatment, adjust the diet, more exercise, keep the bowel movement can be. Severe anal stenosis: one finger can not pass through the anal fingerprinting. It is usually caused by trauma, surgery, tumor and so on. The main symptoms of severe anal stenosis are obstructed passage of feces, difficulty in passing feces, abdominal pain, bloating, vomiting, anal wetness, anal bleeding and other symptoms. Anal stenosis can be treated by anal dilatation, which is suitable for people with mild – severe stenosis of the anus or anal canal, with the help of an anal dilator, and gradually improves until the stenosis dissipates and does not recur. Alternatively, radiation therapy is used for mild and severe stenosis of the anus and anal canal. For severe anal stenosis, which cannot be improved by other means, surgical loosening is required. The skin of the anal canal and a portion of the sphincter are cut in the posterior midline of the anus, and the anus is enlarged so that the index finger passes through smoothly. Anal stenosis needs to pay attention to hygiene, keep the anus clean, during the recovery period of the surgery, patients need to go to the hospital regularly for follow-up, timely observation of the condition, and early treatment of any problems.