Girls who do not pay attention to the hygiene of their lower body will easily cause bacteria to breed in the vaginal area, which will lead to gynecological diseases, such as vaginitis, urethritis, cervicitis and so on. 1. vaginitis: unhygienic women’s lower body can easily cause bacteria to enter the vagina and cause inflammation, which can lead to vaginal bleeding, vaginal discharge with odor and other symptoms. 2. Urethritis: Urethritis can be triggered by unclean sexual intercourse and excessive menstruation, which will cause women to have adverse symptoms such as increased urination, painful urination and hematuria. 3. Cervicitis: not paying attention to personal hygiene, frequent abortions, frequent sexual intercourse can easily damage the cervical mucosa and cause cervicitis, leading to vaginal bleeding and affecting normal life. Women should pay attention to vaginal cleanliness and hygiene, change and wash underwear frequently, and take protective measures when having sex. If vaginal symptoms, such as itching, abnormal vaginal bleeding, etc., it is recommended to go to the hospital in time for examination, to clarify the cause of the disease, and follow the doctor’s instructions for treatment, so as to avoid delaying the condition.