Abstract: There are proteins, unsaturated fatty acids and large amounts of water in aquatic products. Aquatic products are easy to corrupt, degenerate, so the aquatic products preservation technology has been become a hot research, especially bio-preservation. Tea polyphenols are phenolic compounds in general. It has a good antioxidant, antibacterial and antitumor etc. In this paper, constitute, antioxidative and antibacterial mechanism of tea polyphenols were introduced. Its application of tea polyphenols in aquatic products was summarized, and the application prospect of tea polyphenols was also predicted.