Objective: To analyze the chemical constituents of essential oils from Illicium difengpi in Guangxi. Method: The essential oils were extracted by steam distillation

and then the constituents were separated and identified by GC-MS. Result: 118 compounds were isolated and 58 compounds were identified in the leaves that composed about 98.02% of the total essential oils;63 compounds were isolated and 25 compounds were identified in the stem stripped of the bark that composed about 94.90% of the total essential oils;And 124 compounds were isolated and 68 compounds were identified in the stem bark that composed about 92.10% of the total essential oils. Conclusion: There are some differences in the chemical constituents and contents in the above mentioned three parts

the principal chemical constituents of the essential oils are Isosafrole

especially containing in the stem stripped of the bark

reaching to 68.75%.