Postnasal drip syndrome(PNDS)is a common and easily overlooked disease in children.Traditional Chinese medicine(TCM)has a significant effect on its treatment and can quickly alleviate uncomfortable clinical symptoms in children.Professor ZHANG Di believes that disease locations of PNDS are the lung and the nose,which also involve the throat.In the treatment for PNDS,three stages are treated separately.Jingfang Powder,Cang’erzi Powder and Baihe Gujin Decoction are...