Anal swelling and perianal rectal diseases related to a variety of diseases, such as a variety of inflammatory stimulation, tumor stimulation or anorectal pressure increase, women’s gynecological diseases, men’s prostate diseases, can be caused to come to a different degree of anal stimulation, swelling, need to clinically identify. For example, proctitis, as well as some early submucosal abscesses of the rectum, can easily lead to elevated rectal pressure. Some chronic perianal diseases, such as sinusitis, chronic inflammation of the anal papilla or peripheral edema, or some postoperative anal trauma, inflammatory stimulation can lead to increased pressure in the anal canal, and there will be different degrees of anal swelling. Rectal cancer, prostate cancer, or some villi, tubular adenomas, polyps and other rectal polyps, it can also press the end of the rectum of some pressure receptors, can also lead to anal distension, stool increase. Some constipation, fecal impaction to the lower end of the rectum, feces can not be driven out will also be compressed anorectal pressure receptors caused by some of the swelling, or internal hemorrhoids repeatedly protruding, impaction. Some male patients with prostate disease can cause some anal stimulation, women, such as uterine fibroids, pelvic inflammatory disease or uterine tilt, there will be different degrees of anorectal distension. Anorectal swelling should be based on the degree of its duration to identify, so the anal swelling, it is recommended to the local anorectal department to go to the clinic to check, what is the cause of the specific cause, according to the cause of the exclusion of the condition, so that there is a disease of early treatment, before the disease is first prevented.