Urethral infections in women are more common clinically, and some women, especially after intercourse, are prone to develop urethral infections. The main reason is that because the female urethra is short and straight, and near the vaginal opening and anal opening, so when the hygiene conditions are not good after intercourse and the cleaning method is not correct, there is a possibility of urethral infection. In order to avoid this situation, the following methods can be taken: 1, pay attention to the hygiene before and after sex, pay attention to the correct method of cleaning, especially men should pay attention to remove the foreskin within the foreskin scale. 2, can be taken before and after sex to drink more water, more urination, can achieve the purpose of prevention. 3, can be before sex or after sex oral antibiotics, such as furantoin, haloperidol and other drugs to prevent The first thing you can do is to take 1-3 days after sex.