Objective To study Yinhuang Qingfei capsules containing serum on the respiratory syncytial virus in vitro. Methods The cytopathic effect (CPE) and optical density (OD) of respiratory syncytial virus (RSV) infection Hep-2 cells, which were intervened by Yinhuang Qingfei capsules, were by CPE and MTT methods. The inhibition effects of Yinhuang Qingfei capsules on RSV with different doses and different administration methods (drug prevention, treatment, directly kill) were observed. Results Compared with the corresponding concentration of ...