Anal distension and pain, want to defecate, indicating that the tension in the anus is relatively large, can be seen in the following situations: first, consider the inflammatory manifestations of the perianal area, such as perianal abscess, with painful symptoms as the main clinical symptoms. Secondly, consider hemorrhoids, especially internal hemorrhoids, when hemorrhoids are more serious, there will be a feeling of blocking the anus, and at the same time stimulate the rectum, there is a feeling of wanting to defecate. Once again, localized occupational lesions, such as local growth of things, stimulate the local intestinal mucosa, resulting in swelling and pain, want to defecate feeling. Finally, rectal inflammation, can be accompanied by the feeling of bowel movement is not clean. The main thing is to determine what exactly is the cause, to the hospital anorectal department for anal routine examination is the best way to determine.