Vaginal dryness during menopause is caused by a gradual decline in ovarian function. When a woman is in menopause, ovarian function is in the process of gradual decline or even failure. At this time, due to the decline in ovarian function and lower hormone levels, there will be a series of symptoms of urinary and reproductive tract atrophy. In addition to vaginal dryness, it also manifests itself in vulvar itching and even difficulty in sexual intercourse. Symptomatic treatment is needed in this period, which can be used externally to relieve the symptoms of vaginal dryness with lotion, and can also be applied externally with estriol ointment to further improve the urinary and reproductive tract atrophy. Estriol ointment is not absorbed into the bloodstream, so topical application is safer for menopausal women.