Volatile aroma compounds of Rosa Roxburghii Tratt and Rosa sterilis was extracted by solid-phase microextraction , identified by GC-MS technique and their relative content was ascertained by area normalization method of each constituent . There were 31 compounds be found in the extracts from Rosa Roxburghii and 32 compounds be found in the extracts from Rosa sterilis. 14 compounds were the common compounds of the two plants . The main compounds in Rosa Roxburghii were Trans,-bata.-ocimene(20.649%), Nonanal(5.029%)), 1-humulene (6.101%), , Gama-Seliene (12.733%), Hetriacontan (6.507%) The main compounds in Rosa sterilis included 3-Hexen-1-ol,acetate- (Z)-( 10.649%), Trans-,beta-ocimene(5.672%),1-humulene (10.643%), Alpha-humulene(5.911%), Gama-Seliene (18.218%), Alpha -Seliene(5.412%), Heptadecane,9-octyl- (11.573%). There are some differences in the main component of Rosa Roxburghii Tratt and Rosa sterilis . This result provided a scientific basis for utility of Rosa Roxburghii Tratt and Rosa sterilis .