The phenomenon of vaginal discharge after four years of menopause is mostly caused by senile vaginitis. As the ovarian function has declined after menopause, estrogen level decreases, so the vaginal mucosa becomes relatively thin, the local resistance will also decline, easy to lead to geriatric vaginitis. Therefore, if there is leukorrhea four years after menopause, it is recommended to go to the hospital for examination as early as possible to find out whether there is congestion and other inflammatory reactions in the vaginal mucosa. It is recommended to do a high magnification of the leukorrhea laboratory examination, to understand the pathogenic bacteria infected in the vagina, and then give targeted treatment with medication. It is recommended to do gynecological examination to find out whether the cervix is congested and edematous, and to exclude the possibility of local inflammation of the cervix or local lesions of the cervix. If there is also blood in the leukorrhea, it is recommended to do ultrasound to find out the condition of the uterine lining. If the endometrium is larger than 0.5cm, we should be alert to the possibility of endometrial cancer.