If there is still a small amount of bleeding just after menstruation, it is usually because the endometrium is unstable at the end of menstruation, and some external environmental influences lead to a small amount of endometrial shedding. However, if the bleeding does not end and persists, there may be functional bleeding of the uterus, which needs to be treated differently. For example, when the menstrual period has ended a few days time bleeding again, may be due to strenuous exercise, sex, emotional fluctuations, etc. caused by the endometrial shedding, if it is an occasional occurrence does not need to be dealt with, can be recovered on their own. If the bleeding occurs every month, it is usually caused by the abnormal thickness of the endometrium, which needs to be examined by ultrasound to understand the condition of the endometrium, and then adjusted with medication according to the results of the examination. If the menstrual bleeding time is more than one week, it belongs to the abnormal bleeding of the uterus, and should be improved by taking medication under the guidance of the doctor.