Objective:To identify the differences and similarities of chemical components obtained through different extraction methods about Benzoinum and to explore the best extraction method to study the volatile components of Benzoinum. Method:The similarities and differences among solvent extraction (by petroleum ether and ethyl ether)

extraction of volatile oils through steam distillation and extraction of volatile components through HS-SPME were analyzed and compared by the GC-MS technology. Result:5 compounds were identified through the extraction of the solvent of Benzoinum

including 4 compounds in the part of petroleum ether and 4 compounds in the part of ethylether. 19 compounds were identified during the volatile oils extracted by steam distillation. 12 compounds were identified through SPME. The components obtained through three methods all include 4 chemical constitutions such as benzoic acid

benzyl benzoate

vanillin and benzyl cinnamate. The steam distillation obtained the most components in this three extraction methods. Conclusion:The steam distillation obtained the most components in this three extraction methods. It suggested that the steam distillation is the best method to study the volatile components of Benzoinum.