If brown blood is still coming out of the vagina after menstruation, it means that the menstrual blood is not dripping, which is common in the following cases: First, it is caused by overexertion or strenuous exercise during menstruation, and poor rest leads to weakness and poor uterine regeneration. Secondly, bad dietary habits during menstruation, if eating too much frozen, cold or spicy stimulating food, resulting in abnormal contraction of the uterus and incomplete menstrual bleeding. Third, gynecological-related diseases, such as fibroids, endometriosis, etc. can lead to persistent unclean menstruation, requiring specialist consultation and treatment. Fourth, abnormal hormone levels in the body, such as menopausal women with declining ovarian function will have incomplete endometrial exfoliation, resulting in menstrual disorders, it is recommended that women in the case of prolonged menstruation, early specialist diagnosis and treatment.