The headspace volatiles of the Korean ginseng and the Chinese ginseng were extracted using the SepPak Cl8 cartridge (Wasters Co.) and were analyzed using GC/MSD. The overall GC pattern of the headspace volatiles of the Chinese ginseng was similar to that of the Korean ginseng, but the composition ratios of the two major components, $eta$-panasinsene to $eta$-muurolene, were quite different between them. The composition ratios of $eta$-panasinsene to $eta$-muurolene of the Korean red and white ginseng were 1.02$pm$0.28 (n=19) and 1.49$pm$0.55 (n=14) , respectively. However the com- position ratios of the Chinese red and dried ginseng were 0.58$pm$0.19 (n=41) and 0.57$pm$0.17 (n=28), repetitively, which were significantly lower than those of the Korean ginseng at I% level. The composition ratio of the two major headspace volatile components, $eta$-panasinsene to ${gamma}$-muurolene, is thought to be as a useful indicator for differentiating the Chinese ginseng with the Korean ginseng.