The essential oils from fresh flower and fresh branch and leaf of Dracocephalum tanguticum Maxim. from Qinghai were extracted by steam distillation method. And their chemical components and relative contents were identified and analyzed by GC-MS. The results show that the yield of essential oils from fresh flower and fresh branch and leaf is 0. 51% and 0. 33%, respectively; and there are some differences in their composition and relative content. 59 and 44 constituents are identified in essential oils from fresh flower and fresh branch and leaf with accounting for 94. 00% and 92. 40% of total relative content, respectively. In which, relative content of linalyl acetate is the highest from fresh flower and fresh branch and leaf, with relative content of 31. 67% and 36. 16%, respectively. In addition, constituents with relative content over 1% are linalool, α-terpineol, eucalyptol, germacrene D, geranyl acetate and neryl acetate, etc.