The causes of dark menstruation include: 1, abnormal ovarian function: check the sex hormone level can clearly diagnose whether there is abnormal ovarian function, normal can continue to observe or give Chinese medicine to regulate, abnormal should be timely treatment; 2, menstrual irregularities: menstrual flow or more or less, can lead to weakness, anemia, etc., should be timely treatment. 3, the external environment and sudden changes in the climate, and often eat cold and oily food, can also cause the dark phenomenon of great aunt. Please combine the specific medication with the clinical, subject to the guidance of the doctor’s interview.