The source of vaginal bleeding can be considered as follows: 1, blood flowing from the uterine cavity, such as the development of fibroids towards the uterine cavity when growing uterine fibroids, i.e. intermural fibroids or submucosal fibroids, long polyps in the uterus in some people or embedded birth control rings or endocrine disorders, etc., leading to bleeding from the uterine cavity; 2, bleeding from the cervix, such as malignant tumors in the cervix or cervical fibroids or cervical polyps, etc., which can also cause cervical bleeding; 3, Vaginal bleeding, clinically there are often some severe vaginitis, especially senile vaginitis causing patients to have vaginal bleeding; 4. Vulvar hematoma or vulvar lesion caused by vulvar riding across injury, etc., especially when some elderly people have vulvar cancer, there may be vulvar bleeding as well.