Abstract:From the ethanolic extract of root of Heracleum yungningense (Umbelliferae), 10 compounds were isolated and identified as pimpinellin, angelicin, isobergapten, sphondin, 6-isopentenyloxyisobergapten, bergapten, isopimpinellin, stearic acid, melissic acid and β-sitosterol.