In this test,the change of fatty acid content and lipoxygenase(LOX) activity of Cabernet Sauvignon peel during berry development,upon treatment with wounding and MeJA were studied.The results showed that:(1)LOX activity increased to the peak at 12 weeks after anthesis.Wounding treatment was carried on berries at 15 weeks after anthesis,and LOX activity increased to the peak at 3 h after wounding.In addition,MeJA treatment was carried on berries at 15 weeks after anthesis,LOX activity increased to the peak at 24 h after MeJA treatment.(2)The major saturated fatty acids were hexadecanoic acid and stearic acid,linoleic acid and linolenic acid were the major unsaturated fatty acids.(3)The content of fatty acid was increased initially and then declined gradually during berry development,and was volatile after wounding treatment which was carried at 15 weeks after anthesis.The content of fatty acid was increased significantly at 24 h after MeJA treatment which was carried at the 17 weeks after anthesis.