For clinically common diseases that cause frequent urination and anal swelling discomfort are the following: a. Prostate enlargement chronic urinary retention period. It is mainly seen in older men, mostly manifesting as frequent urination, a decrease in the volume of urination in the word, along with discomfort in the perineum, lower abdomen and around the anus, often accompanied by more effort to defecate and dry stools. Second, patients with prostatitis. The main refers to the acute phase of acute bacterial prostate and prostate abscess formation, not only the typical symptoms of urinary tract irritation, but also rectal irritation symptoms of constant bowel movements, but no real stool. Third, ureteral stones. Acute obstruction of stones at the end of the ureter can cause typical symptoms of urinary tract irritation due to stone stimulation, i.e., frequent, urgent and painful urination, and also typical rectal irritation symptoms of constant bowel movements, but no real bowel movements. Fourth, common anal diseases are perianal abscesses and perineal abscesses, which can cause corresponding irritation symptoms due to different stimulation of both urethra and rectum.