The effect of high -temperature oxidation treatment on the thermal properties of flaxsee d oil was investigated by differential scanning calorimetry ( DSC ) method. The results showed that the DSC curve of the initial flaxseed oil included a crystallization exothermic peak, a melting exothermic peak and a melting endothermic peak and shoulder peaks. Prolonging high-temperature oxidation time significant-ly increased the degree of oxidation of flaxseed oil, the crystallization exothermic peak and melting exo-thermic peak gradually disappeared in the DSC curve, melting endothermic peak temperatu...