Cod is high in protein and low in fat, which is one of the most promising aquaculture in 2 1 century. Cod fillets made from cod are called "slimming experts" at the dinner table. Cod is a kind of white meat and low-fat fish, which is the main raw material for making minced fish. With the development of foreign trade in China, a large number of cod are imported. If it is processed into frozen cod fillets and sold in the international market, it will not only earn foreign exchange for the country, but also have good economic benefits.