In order to obtain the volatile components of Lavandula angustifolia in natural state,the conditions of headspace solid phase micro-extraction gas chromatography-mass spectrometry (HS-SPME-GC-MS) were optimized by single factor test and orthogonal test.The volatile components of space blue,a representative variety of L. angustifolia,were analyzed at room temperature and compared with steam distillation (SD).The results showed that the optimum conditions of HS-SPME method were extraction time 60 min,equilibrium time 20 min and desorption time 5 min.Under this condition,34 chemical components were identified and 27 chemical components were identified by SD.The main compound types were acetate,alcohol and olefin compounds,among which linalool and linalyl acetate were the main compounds.The volatile components of L. angustifolia obtained by the two methods are quite different in both chemical composition and relative content.It provides a theoretical basis for rapid quality identification,quality evaluation and rational utilization of L. angustifolia varieties.

"> Lavandula angustifolia, volatile components, headspace solid phase microextraction, gas chromatography-mass spectrometry, steam distillation