Ginseng (the roots of Panax ginseng C. A. Meyer) is a well-known traditional oriental medicine and now it is widely used as a health food. It contains several types of ginsenosides, which are considered as the major active medicinal components of ginseng. It has recently been reported that qualitative and quantitative properties of ginsenosides found in ginseng may differ, depending on cultivation regions, grown ages, species and so on. So it is necessary to study the variation respect to cultivation ages and regions of the main ginsenosides in ginseng.