Failure to wash the vulva after sex generally has the potential to cause urogenital infections as well as some skin diseases, and may even cause fertility problems. After sex, women who do not wash their vulva in time will be more likely to suffer from gynecological diseases and urinary tract infections. Especially in the case of sexual intercourse without paying attention to hygiene, bacteria will enter the female vagina and urethra, coupled with the substances secreted during sexual intercourse will make the pubic area moist, bacteria will multiply, vaginitis, pelvic inflammatory disease, urinary tract infections and other problems, resulting in the appearance of abnormal leukorrhea, frequency of urinary urgency and urinary pain and other symptoms. This can even lead to infertility in the long run. In addition, the bacteria attached to the skin, in the humid state of a large number of reproduction will also cause skin diseases, skin itching and other symptoms. It should be noted that after sex or daily should use warm water to wash the vulva, do not douche inside the vagina, and do not use detergent without medical advice, to avoid causing an imbalance in the vaginal environment, not conducive to health.