The distance between a woman’s urethra and vaginal opening is about 1-1.5cm, with the vaginal opening at the bottom and the urethra at the top of the vaginal opening, which is relatively close. So if you don’t pay attention to hygiene during sex, it may lead to infection of the urethra, because women’s urethra is short and straight, it is easy to invite infection of pathogenic bacteria. So it is recommended that women should keep their vulva clean in their daily life, wash their vulva every day, change their underwear frequently, and pay special attention to hygiene during sex and menstruation. It is also advisable to urinate once after intercourse and drink more water to reduce the possibility of urinary tract infection. And in daily life, it is also recommended that women drink more water and urinate more often, which can also reduce the chance of urinary tract infection.