Abstract: To explore the four different Guangxi Origin Toddalia Essential Oils difference.Method:The volatile oil of Toddalia is extracted by steam distillation,and then use the GC / MS analysis the different origin Toddalia volatile oil’s chemical composition and content.Results:32 components in volatile oil extracted from Nanning were separated and identified,which took of the total 82.71% volatile oil;28 components were extracted from Liuzhou,which took of the total 81.74% volatile oil;27 components were identified from Guilin,which took of the total 81.94% volatile oil;39 components were extracted from Bobai,which took of the total84.49% volatile oil;Conclusion:the four different Guangxi Origin Toddalia volatile chemicals ingredients are insignificant,but the more obvious differences are chemical composition.The results of this study provide a theoretical basis for the Guangxi Toddalia identification.

Key words: Toddalia asiatica(L.)Lam, volatile oil, different areas, GC/MS