Codonopsis can be washed and directly soaked in water, but the use of soaking water can not better utilize the effect of Codonopsis, the use of Codonopsis is decoction. Codonopsis has the effect of tonifying the spleen, benefiting the lung, nourishing blood and generating fluids. Codonopsis pilosula is flat in nature, sweet in flavor, and belongs to the spleen and lung meridians. It is suitable for spleen and lung qi deficiency, loss of appetite, fatigue, cough and asthma, qi and blood deficiency, dizziness, palpitation, shortness of breath, yellowish color, thirst due to injury of fluids, and thirst due to internal heat (fever accompanied by symptoms such as excessive eating, drinking and urinating). The adverse reaction of Codonopsis pilosula is not clear, note that it should not be used by those who have heat or solid symptoms without deficiency of positive qi. This product should not be used with quassia. The effective dosage of Radix Codonopsis pilosulae in water is limited, and it should be used under the guidance of a doctor for regular treatment if therapeutic effects are to be achieved. It is recommended to consult a doctor before taking this product in water, do not take it blindly.