The decoloration technics of blackberry seed oil was studied.It was found that the best condition is as follows;the use of floridin was at 9%,decoloration temperature was at 70℃and decoloration time was 15 minute. Under these conditions,the color of blackberry seed oil decreased to RO.8,Y10.0.GC/MS analysis of the fatty acid in blackberry seed oil shows that the major fatty acids were palmic acid,stearic acid,oleic acid,linoleic acid and gamma-linolenic acid,within which unsaturated fatty acid contents about 85%.The optimized decoloration technics had little effect on the component and content of fatty acid from blackberry seed oil.