Objective: To analyze and compare the volatile components which were extracted from entire plants of Orixa japonica . Method: The volatile components were extracted from entire plants of Orixa japonica Thunb. by the methods of SPME and the chemical components of them were identified by GC-MS. Result: Eighty-five compounds were extracted from entire plants of Orixa japonica

eighty-three compounds were identified. The main volatile components of root are 1-methyl-5

6-divinyl-1-cyclohexene(80.70%) and 3-methyl-3

4-divinyl-1-cyclohexene (7.59%)

the main volatile components of stem are α-pinene(36.12%)

benzyl is onitrile(14.46%)

Benzyl is ocyanide (12.57%) and 2-decanone (4.59%)

the main volatile components of leaf are 2-Hexenal (21.11%)

diktaminin(19.00%)

sabinen(10.79%) and caryophyllene oxide (6.25%). Conclusion: Contain volatile components in the entire plants of Orixa japonica are quite different

eleven compounds were common in both of root

stem and leaf. The results of the studies can be referenced when the entire plants of Orixa japonica need to be further studied.