Abstract:Eleven compounds were isolated from the water extract of the decoction of Radix Paeoniae and RadixGlycpehizae , namely benzoic acid, forinononetin, isoliguiritigenin,liquiritigenin, 4‘, 7-dihydroxyflavone, formononetin-7-glucoside,liquiritin ,galhc acid,paeoniflorin, isoliquiritin and glycyrrhizin acid.