Medicines can be taken to increase menstrual flow under the doctor’s guidance, such as Gui Kidney Pills for low menstrual flow caused by kidney deficiency. In Chinese medicine, low menstrual flow is mostly caused by phlegm-dampness, blood deficiency, blood stasis and kidney deficiency. Low menstrual flow caused by kidney deficiency can be regulated by Qui Kidney Pills under the guidance of a doctor. Low menstrual flow due to blood stasis is often accompanied by blood clots during menstruation, scanty menstrual flow, purplish color, abdominal pain and refusal to be pressed, etc. It can be treated with the addition of Tao Hong Si Wu Tang. Low menstrual flow due to blood deficiency is often characterized by dizziness, fatigue, yellowish color (yellowish without luster), and lower abdominal emptiness, which can be treated by adding or subtracting Bazhen Tang. Low menstrual flow caused by phlegm-dampness will be characterized by obesity, chest tightness and vomiting, and sticky leukorrhea, which can be treated with Cangzhu Phlegm-conducting Pill with additions and subtractions. It is recommended to choose the suitable Chinese medicine to regulate the menstrual flow under the doctor’s guidance and after identifying the symptoms.