Due to the economical and medical importance of the Capparisspinosa plant and the wide distribution of this plant in the Syria environment, it was thought that a study of the composition of Essential Oil extracted from this plant. The Capparisspinosa Essential Oil was extracted and purified components wher studied by GC-Mass spectrometry. The Oil was obtained by steam distillation (Clevegerexractor) and by solvent n- Hexane. Components have been found which was about (98.9 %) from the total of essential oil. The major components were determined by steam distillation which were the following:Palmitic acid (21.12%), Hexatriacontane (15.87%), n-Heneicosane (10.96%), Pentatriacontane (9.92%), Hexahydrofarnesyl acetone (8.51%). The major components were determined by solvent Hexane: Isobornyl acrylate (66.89%), 2-Azido-2,3,3-trimethylbutane (6.09%), Ethanolamine (5.41%).