It is widely recognized by the whole world that traditional Chinese medicine are useful to cure cancer. Some traditional Chinese medicine, like Dioscorea bulbifera L, Hedyotis diffusa Willd and Scutellrla barbata D.Don, have been proved to be of high curative effect during a long time. This thesis focused on the effective chemical components of these three medicines, separation and purification of Dioscorea bulbifera L and two traditional Chinese medicine compounds under the different condition. It was dete...