Gastrointestinal neurosis can present with a sensation of anal distension, but it is not absolutely common in all patients, and the specific manifestations vary from person to person. Gastrointestinal neurosis symptoms often lack specificity, nausea, acid reflux, abdominal bloating, abdominal pain and other digestive symptoms may occur, anal distension is also one of them. However, the specific manifestations of different patients can have a large individual differences, therefore, the feeling of anal distension is not necessarily seen in every patient with gastrointestinal neurosis. It should also be noted that, in addition to gastrointestinal dysfunction, anal distension can also be caused by dysentery, proctitis, sinusitis and other diseases. Gastrointestinal neurosis can be diagnosed only after the exclusion of organic pathologies. This symptom, we must promptly seek medical attention to identify the cause and then under the guidance of the doctor for targeted treatment, do not blindly judgment, self-disposal, so as not to cause adverse consequences.