Fafala, Fafala is the flower bud of compositae plant Fafala, Fafala. Pungent and warm, it has the functions of moistening lung, reducing qi, resolving phlegm and relieving cough. It is recorded in Ben Jing that it is most suitable for "cold binding lung meridian, drinking evil, asthma and cough". Although the smell is warm, moist but not dry, it can be cured if the warm pathogen is depressed in the lung meridian and cannot be discharged. Therefore, cough caused by exogenous internal injuries and insufficient cold and heat can be applied. Especially for patients with lung deficiency and chronic cough. Tussilago Farfar Fara L. is the flower bud of Farfara L., a plant belonging to Farfara in Compositae, which is usually unearthed from the end of 10 to the end of 12. Every winter, in the ice and snow in Sichuan, Qinghai, Henan, Shaanxi and other places, there is a kind of grass that is not afraid of the cold and is proud of first frost, and has yellow flowers. This is the cough medicine Farfara.