A feed-active polypeptide that does not contain any hormones, antibiotics, lean meat, and does not contain toxic substances, can effectively promote the normal healthy growth of livestock and poultry, and at the same time increase the individual's resistance to diseases and has a two-way regulating function. "Additives," has been successfully developed by Professor Lei Guoxiong of East China University of Science and Technology. The project technology is the first in China and has reached the advanced level of similar products in the world. The green additive is based on deep-sea fish meal as a substrate, low-temperature enzymatic hydrolysis and the use of a unique technology combined with a variety of trace elements, the resulting enzymatic hydrolysate is then adsorbed by the carrier, after mixing and drying to form a new Feed Polypeptide Additives. The additive is a green additive, it is non-toxic, growth-promoting, and disease-resistant. It is of great significance to prevent the spread and occurrence of diseases, and no pollution emissions are generated. This kind of additive has a low cost, and it only needs to add about 50 yuan per ton of common feed additive, which is 40 to 50% lower than the original target. At the same time, the net weight of pigs and broilers and the egg laying rate of laying hens are increased, which has significant economic benefits.