Abstract: In this study,four kinds of rose oils from Bulgaria,Miaofeng Mountain in Beijing,Xinjiang province and Pingyin in Shandong were analyzed quantitatively and qualitatively by means of GC/MS.22,22,33,27 compounds were respectively identified in these oils.The main chemical constituents of all the rose oils were citronellol and their esters,geraniol β-phenylethyl alcohol,linalool,rose oxide,eugenol and others.Among these rose oils,the oil from Miaofeng Mountain was mostly different from others.Because of different constituents and their contents,the odor of the oils was different delicately. The relation between constituents and aroma of these four oils and the deficiency of rose essential oils produced in China were analyzed in this thesis.These results will be significant for improving the rose oils' quality.