The color of menstruation is black, which may be caused by qi stagnation and blood stasis. In addition to dark menstruation, there will be less or more menstruation, and there may be blood clots. Menstrual blood may not be discharged normally, and there will also be lower abdominal pain and breast swelling. It is recommended to go to the hospital for inspection, check the specific situation and then use drugs. Pay attention to the use of drugs under the guidance of the doctor, and do not use drugs at will. Pay attention not to have sex during menstruation. It may cause harm to women's health, so we should try our best to avoid it. In addition, pay attention to rest during menstruation. Don't eat spicy food. Smoking and staying up late should be avoided.