Radix Scrophulariae is a nourish yin herbal medicine which is widely used in clinical treatment especially for laryngology. Scrophulariae which products from Zhejiang province is famous-region drug. However, scrophulariae is also largely cultivated in Zheping county of Shannxi province. In order to provide clinical evidence for safe usage of scrophulariae from ZSS, and enlarge medicinal herbs resource, here we study pharmacology activity of Scrophulariae in different part and different metropolis. Q...