A small amount of vaginal bleeding all the time after menstruation is often clinically caused by the following reasons: first, the vagina keeps bleeding because the endometrium is not fully repaired due to estrogen deficiency. Secondly, the tissue is relatively brittle due to inflammation of the endometrium, so there is also constant vaginal bleeding. Thirdly, due to submucosal fibroids, the endometrium is relatively enlarged, which affects the contraction of the uterus and prevents the sinuses from closing completely, so there is bleeding after menstruation. It is advisable to do ultrasound examination to understand the condition of the endometrium in clinical practice. If there is abnormal thickening, it is recommended to do diagnostic scraping if necessary to understand whether there is any lesion in the endometrium. It is also important to find out if there are fibroids in the uterus, and if there are submucosal fibroids, surgery can be done for treatment if necessary.