Dark and scanty menstruation is caused by physiological factors and can be regulated by diet and lifestyle. It may also be caused by vaginitis, ovarian tumors, ovarian insufficiency, etc. Medications can be used to relieve the symptoms, but there is no most effective treatment. A relatively small amount of menstrual blood and dark menstrual blood during menstruation may be caused by a cold abdomen. During menstruation, it is recommended to consume less or try not to consume cold and stimulating food; avoid coitus during menstruation; pay attention to warmth during menstruation and add clothes appropriately; and maintain a good work and rest routine, etc., which is conducive to relieving the symptoms. In addition to physiological factors, some diseases may also cause menstrual darkness and low menstrual flow, such as vaginitis, ovarian tumors, ovarian insufficiency, etc., as well as diseases affecting endocrine function, such as hyperthyroidism, diabetes mellitus, and Schihan’s syndrome. Patients are usually accompanied by other uncomfortable symptoms such as severe abdominal pain in addition to abnormal menstrual flow and color. Patients are advised to seek prompt medical attention and treatment under the guidance of a doctor.