Under normal circumstances, menstrual periods last from 3 to 7 days, some women have periods that last 3 days, some women have periods that last longer than 7 days, if the period does not end after 7 days, it is considered irregular. There are many factors, including the presence of fibroids and endometrial polyps, which may cause the endometrium to be shed at the same time, resulting in prolonged menstruation, or endometritis, which may cause the endometrium to shed irregularly, resulting in prolonged menstruation. Chinese medicine believes that women’s prolonged menstrual periods are caused by excessive weakness of qi and blood. When women have prolonged menstrual periods, they should go to the hospital for relevant examinations in a timely manner and should be actively treated after the cause is clear to avoid anemia.