In some patients with persistent constipation, the root cause may be related to perianal disorders. 1, anorectal stenosis factors: as we have said before, anorectal stenosis, regardless of which factors, will cause the diameter of the anorectum to shrink, which will inevitably cause difficulties in defecation, and the heavier the stenosis, the heavier the constipation, for non-tumor occupancy caused by anorectal stenosis, we must target treatment for various reasons, in order to lift the stenosis, only when the stenosis is lifted, the stool can be changed. In fact, this is because the repeated prolapse of hemorrhoids causes fibroplasia under the skin and mucous membrane, and over the years, coupled with repeated inflammatory stimulation, this can cause fibrosis contracture and adhesions, resulting in anal stenosis, thus causing constipation. This situation is not uncommon clinically. 2, chronic perianal inflammatory stimulation factors: long-term chronic anal fissure stimulation, in addition to causing internal sphincter spasm, the anal canal subcutaneous due to fibrosis hyperplasia, the anus will also tighten, narrow, resulting in constipation. In addition, long-term chronic anal fistula stimulation, especially deep intermuscular fistula, will also form a deeper muscle contracture or scarring stenosis around the anus, resulting in rectal contraction during defecation, the internal and external anal sphincter can not reflexively relax, and thus defecation difficulties. 3, rectal mucosal relaxation or internal sleeve: rectal mucosa is closely combined with the rectum, however, due to long-term squatting or constipation and other factors, can often lead to rupture of the tendons under the rectal mucosa, so that the mucosa and muscle layer disjointed, so that the feces into the rectum, even if the rectal contraction is normal, and the mucosa due to disjointed, so the mucosa can not synchronize with the muscle layer, therefore, the feces can not smoothly forward, therefore, will also occur Constipation, the biggest feature of this patient is that there is always a sense of incomplete discharge after the stool, the reason is that the loose mucosa “pile” in the intestinal cavity, still stimulate the pressure receptors, only the mucosa by its own elastic retraction, the sense of stool slowly disappeared, the next defecation still repeat the above symptoms. 4, female rectal protrusion factors: rectal protrusion is a unique female disease, and often occurs in middle-aged and elderly patients with chronic constipation, because the female vaginal septum and rectum closely connected, if the rectovaginal septum is loose, the rectal wall is easy to expand forward, similar to hernia protrusion, so that the rectum when the stool down the accumulation in this, but also easy to produce constipation, such patients often need to use their fingers from the vagina to press the rectovaginal septum in order to discharge stool This causes greater physical and mental pain to the patient. Often, after many patients are relieved of perianal disease, the stool is naturally smooth.