Vulvar atrophy in old age may be a physiologic change. It may also be caused by vulvar leukoplakia, senile vaginitis and other reasons. 1. Physiological changes: as the elderly grow older, all the tissues and organs of the body will experience different degrees of decline. After menopause, the level of estrogen decreases or even disappears due to the decline of ovarian function, and the lack of estrogen gradually causes vulvar atrophy. 2. Vulvar leukoplakia: If female patients have vulvar leukoplakia, it may lead to the obstacle of microcirculation under the skin of lower body, resulting in metabolic dysfunction, causing itching, dryness, atrophy and other symptoms of the skin of lower body. 3. Geriatric vaginitis: Geriatric vaginitis is also called atrophic vaginitis, because of the low level of estrogen in the body, it is easy to cause atrophy of the lower body, which may be accompanied by itching of the lower body, increased secretion and other symptoms. Lower body atrophy in the elderly should be ruled out as a condition caused by age. Should promptly go to the regular hospital for examination to clarify the cause of the disease, and then under the guidance of professional doctors for treatment.