Less menstrual flow is related to deficiency of qi and blood. Wuji Baifeng Pill is a medicine for invigorating qi and blood, which can be taken. But if it is caused by a cold, you should not take it. The causes of menorrhagia can be divided into the following four categories: 1, blood stasis type: the main manifestations are menorrhagia, purple color, accompanied by blood clots, abdominal distension pain, pain relief after blood clots are discharged, purple tongue and astringent pulse. 2, kidney deficiency type: mainly manifested as less menstrual flow, pale face, weak waist and knees, heel pain, dizziness and tinnitus, frequent urination, pale tongue and weak pulse. 3, blood deficiency type: mainly manifested as less menstrual flow or dripping clean, pale color, accompanied by dizziness, palpitations, sallow complexion, abdominal emptiness. The tongue is pale and the pulse is thin. 4. Phlegm-dampness type: mainly manifested as less menstrual flow, red color, sticky body, fat body, chest tightness, nausea and stickiness. The tongue is fat, the coating is white and greasy, and the pulse is slippery. According to different reasons, the following drugs can be selected: 1, Poria finger fan 9: 5g, twice a day, each time, swallowed. Used for patients with phlegm-dampness type. 2, Tiaojing Huoxue tablets: 3 times a day, 5 tablets each time, swallowed. Used for patients with qi stagnation and blood stasis. 3, motherwort cream: 3 times a day, 2 spoonfuls each time, with boiled water. For patients with menstrual disorder, take it 2-3 days before menstruation. 4, Shishi Guntan Pill: 2 times a day, 5 grams each time, swallowed. Used for patients with phlegm-dampness constipation. 5, Heche jujube pills: 2 times a day, 3 grams each time, swallowed. It is used for patients with kidney deficiency and essence deficiency.