The research aims to identify incoming fatty acids in the composition of both the Syrian domestic oil extracted from the seeds of Nigella sativa, fenugreek, borage and Rocket , using gas chromatography GC, as the goal to identify some of the most important physical properties ( density and refractive index ) and chemical ( Iodine number and saponification number ) utmost to improve and develop the Syrian varieties of the studied oils. Search Results showed that borage oil contain the highest proportion of the Poly unsaturated fatty acids ( 81.5% ) PUFA and the highest percentage of gamma -linolenic acid ( 14.4% ) GLA, and it was for each of Nigella sativa oil and oil fenugreek close by percent's of ( 60.89%-60.95% ) PUFA, and overall mono unsaturated fatty acids ( 33.89%- 28.19% ) MUFA and linoleic acid ( 60.71%-58.92% ) LA has the enjoyment of the highest value oil ring of oleic fatty acid ( 26.72% ), while oil Rocket had the highest values ( 79%) MUFA so different from the rest of the studied oils. The results of this research clearly compatible with the results of global studies at the same oils.