Too little menstruation can be regulated according to the specific cause and type of Chinese medicine, such as kidney deficiency type taking angelica dihuang drink, blood deficiency type taking blood nourishing soup and so on. 1. Kidney deficiency type: manifested as a small amount of menstruation, not the day that the net, or a drip, blood color pale, waist pain, leg weakness, dizziness, tinnitus, frequent urination. Treatment: tonifying the kidney and benefiting the essence (replenishing the kidney essence), nourishing the blood and regulating menstruation (regulating menstrual irregularities caused by blood deficiency), using Angelica sinensis and Di Huang Drink with additions and subtractions. Adverse effects and contraindications are not clear. 2. Blood deficiency type: the main manifestations are or drip, menstrual light red, dizziness, menstruation, small amount, not the day of the net, palpitations (heartbeat, often accompanied by panic), insomnia, the skin is not moist and so on. The treatment should be to tonify blood, benefit qi and regulate menstruation, and the formula is to add subtractions to Zi Xue Tang. It is not suitable for people with solid-heat menstrual disorders. 3. Cold blood type: manifested as dull red color, cold pain in the abdomen, pain reduced by heat, low menstrual flow, fear of cold limbs (fear of cold, cold limbs), greenish-white face, etc. The treatment should be warming menstruation and dispersing cold (warming menstruation and dispersing cold). The treatment is to warm the menstruation and disperse the cold (warm the human body meridians, get rid of the cold in the body), activate the blood and regulate menstruation, and use the Wen Jing Tang plus subtractions. Avoid eating cold and raw food while taking the medicine. 4. Blood stasis type: manifested as purple and black color with lumps, stabbing pain in the abdomen and refusing to be pressed, astringent menstrual flow, pain reduced after the blood clots are removed, or distension and pain in the chest and ribs. Treatment should include activating blood circulation and removing blood stasis (promoting blood circulation and eliminating blood stasis in the body), regulating Qi and regulating menstruation (regulating menstruation by combing the Qi channels), and using Tong Yu Decoction with additional subtractions. Adverse effects are not clear. Chinese medicines or proprietary Chinese medicines should be used under the guidance of a Chinese medicine practitioner and should not be used blindly by individuals to avoid adverse effects.