Boiled water can stop cough. Boiled water has the effect of dispersing blood stasis and swelling, resolving phlegm and relieving cough, and is often used in the treatment of phlegm-heat cough, bruises and other injuries. It is a heat-clearing and detoxifying (removing heat and toxicity from the body) medicine in heat-clearing medicine. It is sweet, slightly bitter and cool in nature. It enters the lung meridian. It has the effect of dispersing blood stasis, eliminating phlegm, relieving cough, clearing heat and detoxification, and is long used in the treatment of phlegm-heat cough, carbuncle, bruises, hemorrhoids, bone fracture and burns. Although the orchid boiling water has the above effects, but note that a single Chinese medicine for s with weak, can be in the identification of traditional Chinese medicine under the guidance of the guidance of other medicines used at the same time, in order to achieve the best therapeutic effect. The adverse reactions of Hang Lan are not clear. People who have a history of allergic reaction to Hang Lan should not drink water boiled with Hang Lan. If necessary, please use it under the guidance of professional Chinese medicine practitioners.