Objective: To observe the anti-RSV effect of Gentiana veitchiorum decoction,n-butanol extract,ethyl acetate extract,chloroform extract in vitro and vivo.Methods: To observe cytopathic effect(CPE) and Methyl thiazolyl tetrazolium(MTT) assay,the effect of anti-RSV was evaluated with RSV infected hep-2 cells for different Gentiana veitchiorum.The degree of mouse lung tissue inflammation was evaluated by experimental hematoxylin and eosin(HE) staining and immunofluorescence.Results: After the different Gentiana...