If there is still blood after seven days of menstruation, it may be caused by physiological reasons, endocrine disorders, uterine fibroids, inflammation in the uterus and other reasons. 1. Physiological reasons: the normal number of menstrual days is 2-8 days, if there is still a bit of blood after seven days of menstruation, and the amount is relatively small, it may be that menstruation is about to end, which is normal at this time and does not require special intervention. 2. Endocrine disorders: If a woman has endocrine disorders, it may cause the endometrium to shed smoothly, resulting in bleeding even after 7 days of menstruation. 3. Uterine fibroids: If fibroids are present, they may affect the uterine lining, leading to prolonged menstruation and bleeding even after seven days of menstruation. 4. Inflammation in the uterus: If the uterus is infected by pathogens and there is inflammation, it will affect the normal shedding of the uterine lining, leading to prolonged bleeding. There may be other reasons for bleeding after seven days of menstruation, so it is recommended to go to the hospital in time to improve the examination and clarify the cause of the disease, and then give targeted treatment or therapy under the guidance of the doctor.