The itching of vulvar labia is mainly due to the following causes: i. The most common is vulvar itching caused by vulvovaginal pseudomonal yeast disease, which is manifested by a tofu-like vaginal discharge, and the vulva can be very itchy, red and swollen, often accompanied by symptoms of urinary urgency and frequency. Second, mycoplasma infections can cause vulvar itching, as well as trichomonas infections. Third, bacterial vaginosis with increased discharge can also make the vulva itchy. Fourth, local inflammation of the vulva, such as vulvar dermatitis, eczema of the vulva, and herpes simplex virus infection of the vulva may lead to itching of the vulva. Therefore, once the vulva labia itching occurs, you must go to the hospital to let the doctor to rule out symptoms such as vulvar dermatitis under visual observation, and do the examination of vaginal secretions to understand the pathogenic bacteria infection, and then use targeted medication to treat it.