Female urinary tract infections have a relationship with sexuality. Urinary tract infection is a common disease in urology, and most often seen in female patients. Due to the characteristics of female urethral anatomy, the female urethra is relatively short and straight, and adjacent to the anal opening and vagina. Therefore, when the hygiene conditions are not good, cleaning method is not correct, especially if the man has a circumcision, circumcision, female sex after it is easy to bacteria through the urethra retrograde infection of the bladder, urinary tract infection, manifested as frequent urination, urinary urgency, urinary pain. In order to prevent women from urinary tract infection after sex, in addition to both men and women should pay attention to cleanliness and hygiene, can drink more water, more urination, which can reduce the chance of infection.