Abstract: In ordcr to find the aroma characteristics of the essential oil of Pelargonium gravcolens L'Herit. produced from different producing area, the chemical constituents of the Geranium oil from Kunming, Yuxi, Shiping, Binchuan in Yunnan province and Bour. France, Egypt were analysed quali-tatively and quantitatively by means of capillary GC/MS/DS on Finnigan- 4510, and 35 different constituents were identified. As the result, the aroma of the essential oil from Yunnan seemed to be formed mainly by a combination of citroncllol, citronellyl formate, gcraniol, and rose oxide, while that from France and Egypt appeared to be formed by geraniol, geranyl formate, citronellol, citronelly1 formate and linalool. They are possessed of different style and aroma characteristics.

Key words: Pelargonium graveolens