The water distillation extractor was used for extracting the chemistry constituents of Lonicera Similis Hemsl on anti virus chinese traditional medicine.The average oil yield obtained was 2.52%.50 chemical components were identified by gas chromatography/mass spectrometry(GC/MS) method.Of them the main components are:acids(59.76%),ketones(15.58%), alcohols(12.85%),terpinenes(1.57%),terpinen oxides(1.32%),aldehydes(1.74%),aliphatic compounds(7.81%).The contents of the identified compounds make up 98.44% o...