Objective To evaluate antiviral activity of penciclovir against HSV-Ⅰ and HSV-Ⅱ infection in vitro in vivo.Methods The CPE inhibitions of vero cells infected by HSV-Ⅰ and HSV-Ⅱ were assayed by CPE inhibitory experiments;The treatment effect on the lesion of ear pinna of BALB/c mice infected by HSV-Ⅰ were determined for evaluating antiviral activity of penciclovir.Results Penciclovir could effectively inhibit CPE of vero cell infected by HSV-Ⅰ,and the IC 50 for penciclovir against HSV-Ⅰ and HSV-Ⅱin v...