Abstract: In order to analyze the chemical components of essential oils in flower， leaf and stem of Trachycarpus fortunei （Hook.） H. Wendl. and their biological activities， the volatile oils were extracted by supercritical CO2 extraction and were identified by GCMS. The antimicrobial activities of the identified volatile oils were inspected in vitro. It was shown that 224 components were identified altogether. In flowers， main constituents of the identified volatile oils were tricosane （23.86%） and octacosane（8.48%）. （Z）3hexen1ol （15.87%）， 1hexanol （12.60%）， 2，3butanediol （10.19%）， 3（1ethoxyethoxy）2methylbutane1，4diol （9.63%）， toluene（9.60%） and 2ethoxy3chlorobutane （8.10%） were the main volatile oils in the leaf， and toluene （13.80%）， 1，1diethoxyethane （25.77%） and 2，3butanediol （10.65%） were the majority in stem. The extracted volatile oils from flower， leaf and stem by cyclonexane and aether exhibited special inhibiting activities against some pathogenic bacteria， which indicated their potential as bacteriostatic agent.

Key words: Trachycarpus fortunei （Hook.） H. Wendl., volatile oil, chemical components