In order to investigate the effect of intense pulsed light（IPL） on oils oxidation， the effects of different IPL treatments on the POV value， CGV value， MDA value and free radicals of the animal fats （lard） and vegetable oils （soybean oil） were studied. The results showed that IPL treatment could promote the formation of peroxides， carbonyl compounds， malondialdehyde and free radicals， and the oxidation rates of lard and soybean oil were accelerated with the increasing of the pulsed energy. The changes of POV value， MDA value and free radicals of lard were more obvious than that of soybean oil. The kinetic analysis indicated that the effects of IPL treatment on the oxidation of soybean oil and lard followed half-order kinetic equation.