Abstract: The essential oil from Kramer's supreme was analyzed by GC/MS method. 37compounds were identified, which occupied 54.84% in the total essential oil, and they belonged to alcohol, alkenonic/alcoholic oxide, aldehyde, ester, alkene, acid, alkyl,and Phenanthrene. Alcohol is on the top of the compounds list. The characteristic constituents of aroma are Linalool, cis-Linaloloxide II, Methyl Salicylate, 3,7-dimethyl-(+-)-1,6-Octadien-3-ol, alpha-Terpineol, Nonanal, Tetracosane. The Linalool was found to be 39.97% in the total essential oil.