Searching antiviral and antibacterial active components from Chinese herbal medicine will be very helpful not only in providing theoretical evidence for developing new drug, but also in proper exploitation and utilization to resources of Chinese herbal medicine. This study mainly involved in 7 Chinese herbal medicines which belongs to Taibai Moutain area, Shaanxi Province at the basis of in vitro bacteriostasis tests. Selections on antiviral and antibacterial active fractions of Polygonum taipaishanense Kun...