It is possible for prostate enlargement to have an effect on the anus, which can cause anal cramping and always wanting to have a bowel movement. The prostate gland is close to the rectum, and prostate enlargement is an inflammatory disease of the male prostate. Prostatic hyperplasia leads to gradual enlargement of the gland, reaching a certain size, which will press on the rectum, causing reflexive anal distension, but also stimulate the rectum to produce the urge to defecate, often want to go to the bowels, but not necessarily have a bowel movement. Hemorrhoids, rectal polyps and other intestinal diseases, can lead to anal swelling, often want to defecate symptoms. Therefore, prostate hyperplasia patients, if the symptoms of anal swelling, always want to defecate, but also need to be vigilant about intestinal diseases caused by, it is recommended to consult a doctor in a timely manner, and comply with the doctor’s instructions for treatment.