The antiviral and antibacterial actions in vitro of bingduqing granules which consists of nine kinds of Chinese traditional medicinal herbs were observed. The results showed that the inhibitive concentrations of bingduqing granules for Adv-7, RSV, HSV-1, and influenza virus A3, were >-6.9, 8.3, 13.8 and 83 mg x ml-1, respectively; while the minimum inhibitive concentrations for Staphylococcus aureus, Staphylococcus epidermidis, Type A and B Streptococci, and pseudomonas aeruginosa were 0.03125, 0.03125, 0.125, 0.125, and 0.25 g x ml-1, respectively. This study provide a pharmacodynamics basis for clinical application of Bingduqing Granules in the treatment of respiratory tract infection.