Drinking gynostemma in water has the effect of clearing heat and removing toxins (removing heat and toxins from the body), relieving cough and expectorant, and benefiting the spleen (regulating the qi of the spleen and stomach). There is no study to clarify its contraindications. Gynostemma is a qi tonic. It is cold in nature, sweet and bitter in flavor. It belongs to the lung, spleen and kidney meridians. It can be used for the treatment of loss of appetite and cough caused by deficiency of spleen and stomach qi. It can be used with Atractylodes macrocephala and Poria when used for the treatment of loss of appetite caused by deficiency of spleen and stomach qi; it can be used with Phellodendron Bidentata and Lily when used for the treatment of cough caused by lung deficiency. The effect of soaking is not as good as boiling, the specific combination of drugs should be taken under the guidance of a doctor, do not blindly take on their own, so as not to delay the condition.