Compared with BHT, BHA, PG and vitamin E, it has better antioxidant capacity; It can effectively inhibit the growth of Bacillus subtilis, Staphylococcus aureus, Escherichia coli, Brevibacterium aerogenes and other bacteria, as well as Aspergillus niger, Aspergillus versicolor, Aspergillus flavus and other microorganisms. The antioxidant function of TBHQ is much better than that of conventional antioxidants. As far as vegetable oil is concerned, the order of antioxidant capacity is TBHQ > PG > BHT > BHA. Adding TBHQ to food can not only delay the oxidative deterioration of oils, but also inhibit a variety of microorganisms. It can be used as antioxidant in edible oil, fried food, dried fish products, biscuits, instant noodles, instant rice, canned dried fruit, pickled meat products and cosmetics