If there is still blood on the tenth day of menstruation, it may be caused by the following clinical reasons: First, the lack of estrogen makes the endometrium not be able to repair as soon as possible, so the menstruation is not complete. Second, the cervix polyps caused by the cervix, due to the cervix has polyps, will lead to the phenomenon of blood in the leukorrhea. Third, caused by submucosal fibroids, due to submucosal fibroids, affecting uterine contraction, so it will lead to prolonged menstruation. In addition, endometrial inflammation, endometrial polyps, atypical hyperplasia of the endometrium, endometrial cancer may lead to menstrual dribbling. It is recommended to do routine blood test, gynecological examination, ultrasound examination, and then according to the results of the examination and then give the appropriate treatment, if necessary, also need to do diagnostic scraping, sent to the pathology, and then clinical diagnosis based on the pathological diagnosis of the treatment to be given.