The essential oils obtained from the flower, leaf and stem of Lathyrus vernus (L.) Bernh have been studied. Total 52 compounds were identified, constituting over 97.3, 95.3 and 98.0 % of whole oil composition, respectively. Carboxylic acids were shown to be the main constituents of the flower and stem part in the ratio of 34.2 and 35.3 %, respectively. But, the major components in the leaf oil were found to be alcohols (59.3 %). The main compounds identified in the essential oil of the flower, leaf and stem of L vernus were palmitic acid (34.2-35.3 %) and 1-octen-3-ol (49.8 %), respectively.