Abstract:Gas chromatography-mass spectrometry （GC-MS） was used to investigate the aroma characteristics of deterpened sweet orange oil from alcohol concentrations，stirring times and sweet orange oil addition amounts. 13 kinds of deterpene sweet orange oil were obtained by alcohol solution method which remove terpene from Brazilian sweet orange oil. The results showed that 55 volatile components were detected in sweet orange oil and 13 kinds of deterpene sweet orange oil，including 17 alkenes，12 aldehydes，15 alcohols，4 ketones，3 acids，3 esters and 1 phenol. The limonene content in deterpene sweet orange oil accounted for 7%-45% of that in unprocessed sweet orange oil. Compared with unprocessed sweet orange oil，the aldehyde content increased by 160-700 times. The alcohol content increased by 130-1 380 times. And the Alcohol Solution Method not only removed the terpene substances in sweet orange oil，but also enriched the terpene oxides.Through principal component analysis and cluster analysis，the aroma intensity of 13 kinds of deterpene sweet orange oil could be divided into 4 groups. The aroma character impact of the sum of 9 aroma components （α-pinene，myrcene，limonene，octanal，nonanal，decanal，（E，E）-2，4-decadienal，linalool and dodecanal） was more than 98% in each sample.