This if to mensurate by thin-layer scan the content of Astragalus glycoside A of all glycoside-containing parts in BUYANGHUANWU D ecoction.The result shows there in 0.5793±0.01268mg/g,and 1.075±0.02120mg/g in a single herb.The Astragalus glycoside A extracted from all glycoside-containing parts in the compound is about the same as that in one single herh(P>0.05).We conclude that water boiling,alcohol-depositing,c...