Differential scanning calorimeter(DSC)method was applied for evaluating the incipient oxidation temperature of the pressed flax seed oil and rapeseed oil samples,DSC method and oil oxidation stability tester(Rancimat)method were applied for evaluating the induction oxidation time of these oil. The results shows that the incipient oxidation temperature of flax seed oil is lower than the rapeseed oil by 30 ℃ ;Induction oxidation time determined by DSC method and Rancimat method were short with oxidation temperature decreasing,and high linear cor...