Scutellaria barbata D.Don, belonging to the plant family Labiatae, has been traditionally used as a folk medicine in China for the treatment of digestive system cancer, hepatoma, lung cancer, breast cancer, chorioepithelioma, hepatitis, liver cirrhosis and other diseases. At present, summary about anti-tumor active constituences in S. barbata which have reported are still not overall. The quality control of S. barbata was so confined to scutellarin or total flavonoids, which hardly reflect the globa...