Due to the physiological characteristics of women, prevention of women’s diseases is important. The umbilical end of the fallopian tube is connected to the abdominal cavity, the cervical opening is exposed to the vagina, and the vagina opens to the vulva so that the female genitalia make the abdominal cavity connected to the vulva. The anterior part of the vagina is adjacent to the urethra and the posterior part to the anus. Because of these characteristics, (1) women who do not pay attention to the hygiene during menstruation, abortion and puerperium, or physicians who do not strictly observe aseptic practices, can lead to infection of the genital tract, which can spread upward along the internal cavity and cause inflammation of the uterus, fallopian tubes and even the pelvic peritoneum. (2) The environment of the vulva is conducive to bacterial growth. The vulva is often in contact with urine, leukorrhea, menstrual blood and feces and is susceptible to bacterial contamination; leukorrhea and menstrual blood are also good environments for bacterial growth and reproduction. After the infection of the vestibular gland and the paraurethral gland, bacteria can be harbored for a long time and become chronic lesions and can recur in acute attacks. (3) The vagina is an organ of coitus, and inattention to sexual hygiene or unclean intercourse is an important cause of inflammation of the genital tract and sexually transmitted diseases. (4) Female reproductive organs are supported by the pelvic floor tissues. Childbirth can cause damage to the pelvic floor tissues and weaken the support role, in addition to causing uterine prolapse, can be accompanied by changes in the position of the bladder, urethra and rectum, and produce the corresponding symptoms. Therefore, experts tell women that good personal hygiene habits can avoid many women’s diseases. They also tell women that the following hygienic habits are not scientific. First: frequent vaginal douching: Many women have the habit of vaginal douching. The vagina is actually a bacterial environment. The vagina is dominated by Lactobacillus, along with other microorganisms that live in symbiosis with the vagina. The sterility of the vagina is dangerous. Because there is nutrition and space in the vagina, and in the absence of resident microorganisms, the invasion of any of the pathogenic microorganisms can cause a serious infection. Second: Cleaning with lotions: There are a variety of vulva cleansers on the market, all boasting the efficacy of sterilization and cleaning. But in fact, the vulva is best cleaned daily with clean, running water, not with any lotion. This is because the skin of the vulva is very delicate and prone to allergic reactions. Any lotion can cause allergies to the vulva, including some soaps and baths, and many vulvovaginal infections stem from allergies. Third: Daily use of pads: Many times the use of sanitary pads is used by women as a substitute for changing their underwear daily, which is wrong. Underwear should be washed daily and preferably made of cotton. Pads are no more breathable than cotton panties. And many microorganisms reproduce, very much like moist and warm conditions. Therefore, women should reduce the use of pads as much as possible, change their underwear every night, and hand wash their underwear and dry them in a ventilated, dry place. Fourth: wash your vulva only after intercourse Almost all women can wash their vulva after intercourse, which is a relatively common hygiene habit. But in fact, men and women wash their external genitalia before intercourse, which can greatly reduce the spread of microorganisms and reduce cross-infection through sexual activity.