Ephedra, Apricot Kernel, Licorice, and Gypsum Decoction is a common formula to external contraction cough. The formula is originated from Shanghanlun, greater yang disease pattern, It is widely used in allergy which caused by wind-cold fettering the skin, and by intense lung heat pattern.The ordinary syndrome includes external contraction cough, asthma, postnasal drip, fungal rhinosinusitis, and skin allergies.Through the appropriate Pattern Identification, the curative effect can be better. And because the formula is tasty, children can accept it.