If menstruation cannot be stopped for a long time, it will be manifested as menstruation not going away, which may be caused by functional uterine bleeding, uterine fibroids, endometrial lesions, etc., and need to be analyzed specifically. 1. Functional uterine bleeding: if there is endocrine disorder, it will affect the endometrial shedding irregularly, resulting in bleeding persistently, which is a functional lesion. 2. Uterine fibroids: if the fibroids are large or the location of fibroids is special, it will lead to abnormal contraction of the uterus, and the small blood vessels can not be closed, resulting in persistent bleeding. 3. Endometrial lesions: if the endometrium exists overgrowth, tumors and other factors, it will also lead to the shedding of the endometrium is affected, which is manifested in the persistent absence of menstruation. If menstruation persists, it is recommended to go to the hospital in time and take appropriate methods to deal with it under the doctor’s guidance.