Introduction: In Vietnam, ginger is a herbal medicine. Their rhizoma was used as a spice and their essential oil was used for a wide array of ailment that include arthritis, rheumatism, sprains, muscular aches, pains, sore throats, cramps, indigestion, vomiting, hypertension, dementia, fever, infectious diseases, etc.. In this study, we compared the essential oil compounds of two ginger plants: Zingiber officinale Rosce.