Senile vaginitis: refers to older women before and after menopause vaginal physiological defense function is reduced by bacterial infection caused by inflammation. Elderly women before and after menopause, with the decline of ovarian function, estrogen level decreases, the vaginal epithelium atrophy and thinning, the amount of cells to reduce the amount of intracellular sugar and decomposition of lactic acid to reduce. So that the original reproductive period with the body’s self-cleaning role of the highly acidic environment (PH4. 0- 4. 5) gradually become alkaline (PH 6- 8), the vaginal defense function is weakened, which is very conducive to the propagation of various types of bacteria, thus triggering vaginal inflammation. The clinical manifestations of senile vaginitis are: the vagina is very clean for a period of time after menopause, but gradually dry itching or dryness occurs, at this time there may be little secretion, or a small amount of yellowish secretion. Gynecological examination may find that the vaginal wall becomes thin and light, and there are scattered or numerous spots of congestion or oozing blood on the mucosa. Treatment of senile vaginitis should be based on the physiological characteristics of the vagina to strengthen its protective role. 1, the use of vaginal and vulvar cleansing method, the cleaning solution should be acidic, to make up for the physiological acidity of the elderly weakened the situation, can be 1% lactic acid or 0. 5% acetic acid liquid douche vagina. As far as possible, do not use potassium permanganate (P . Potassium permanganate (P.P.) liquid sitz bath, in order to prevent improper grasp of the concentration or long-term use of local skin mucosa due to astringent effect and appear more dry and itchy phenomenon. 2.Combined with the characteristics of the elderly, under the guidance of the doctor, local or systemic estrogen can be used with the treatment. 3, pay attention to maintain pubic hygiene, nightly application of warm water to wash once.