Abstract: Objective To establish a GC fingerprint analysis of Lygodium japonicum.Methods The fingerprint of Lygodium japonicum from 10 different regions was performed by capillary GC chromatography,AT OV-17 column was used,programmed temperature was from 40 to 200 ℃,sample injector temperature:220 ℃,FID detector temperature:220 ℃,split ratio:20∶1.Results GC fingerprint of Lygodium japonicum.consisted of 14 common peaks,but there was a certain difference of GC fingerprint of Lygodium japonicum between different producing areas.Conclusion The method gives good stability and reproducibility,and   provides a reference standard for the quality control of Lygodium japonicum.

Key words: Lygodium japonicum, volatile components, GC, fingerprint