Abstract: There were 129 kinds of volatile compounds identified from Qiaqia and other brands sunflower seeds by SDE and GC-MS. The volatile compounds were primarily including aldehydes,ketones,esters,olefins,ethers,phenols,alcohols,acids and compounds containing nitrogen or sulphur. Different brands of aroma sunflower seeds contain their unique volatile flavor compounds. 129 kinds of volatile compounds were analyzed by principal component analysis with the SPSS 19. 0 software and 8 principal components with cumulative contribution rate of 92. 44% was chosen for the cluster analysis. The result showed that Qiaqia aroma sunflower seeds can be significantly distinguished from the other brands by the principal component and cluster analysis. The results were helpful for further research of chemical identification,improvement of processing technology and flavour formation mechanism of aroma sunflower seeds.