Abstract: Objective:In order to provide a scientific evidence for the cultivation and exploitation of Mentha haplocalyx Briq.,volatile components analysis of peppermint grown in Shilin,Dehong and Xishuangbanna were done.Methods:Volatile components of peppermint in 3 growing areas were analyzed by the Needle trap-GC-MS,and the suitability of using the Needle trap-GC-MS for plant analysis of volatile components was investigated.Results:In total,44 volatile components were separated and identified from peppermint grown in three origins,most of them were monoterpenes and sesquiterpenes terpenoids and their oxygenated derivatives.Those grown in Shilin and Dehong showed a high similarity in volatile components where L-menthol alcohol had a content of more than 70%.A big difference was found in the peppermint grown in Xishuangbanna where the main components were thymol (20.04%),carvacrol (19.03%) and 4-Isopropyltoluene(12.19%).Conclusions: Different growth environment had a great influence on the chemical compositions of the peppermint.Peppermint that grew in Shilin and Dehong produced high levels of menthol,suitable as a flavor material of producing mint aromas fragrance,which could be used in food,cosmetics and tobacco industries.However,peppermint grown in Xishuangbanna contained a lot of pharmacological active ingredients,might be more suitable for application in traditional Chinese medicine field.