In order to promote the development and utilization of wild Allium resources in the Tibetan Plateau, the volatile components of eight wild Allium species in Tibet were measured by dynamic headspace gas chromatography / mass spectrometry. The components identified were determined by NIST 11 and Wiley 7n standard library, and the quantities were calculated by peak area normalization. Twenty-five volatile compounds were detected in the leaves of Allium cyathophorum, A. macranthum, A. rude, A. chrysanthum, A. prattii, A. cyaneum, A. fasciculatum and A. wallichii. Fourteen volatile components were detected in A. rude, three in A. prattii, approximately ten in other species. The diethyl ether and dimethyl disulphides were found in eight wild Allium species with variable levels on content. The propyl mercaptan was specifically detected in A. cyathophorum and A. rude, and the compounds including propanal, methylsulfur heterocyclic ring, dipropyl trithiolides, 2,4-dihydro-4-methyl-3H-1,2,4-triazole-2-thionone, 3-amino-2-thiazolinone, and 1-chloro-1-propylene were extensively detected in A. rude. The trimethylamine and diallyl thioether were detected in A. macranthum, methylpropyl thioether in A. cyathophorum, hexaldehyde in roots of A. fasciculatum, as well as positive octane and 2-fluoropropene in stems of A. chrysanthum. In A. rude, two and fourteen volatile components were detected in underground stems and leaves, respectively. 15 and 12 volatile components in underground stems and leaves of A. chrysanthum were identified. The volatile substances in different parts of the same wild Allium are as follows: there are 2 kinds and 14 kinds in the underground stems and leaves of A. rude; 15 kinds and 12 kinds in the underground stems and leaves of A. chrysanthum; 6 kinds and 3 kinds in the underground stems and leaves of A. prattii; as well as there are 10, 9 and 8 kinds in the Stem (both above and below ground) , fleshy roots and leaves of A. fasciculatum respectively.