Abstract: Vitan in E BHT, BHA and PG were added into the fish oil respectively with single dosage or as mixtune in different level The peloxrlant Vahe was detenn inert in order to know the better dosage and the better cnoperatnn condition The resups indicated that no better antioxidant effect was reached when the single an tioxidant was put into the fish oil The better antioxidant effect was found when 1500mg vitan in E, 200mg BHT, 100mg BHA was put into lkg fish oil.