Collagen (Collagen) is a very important human proteins, mainly in the connective tissue. It has a strong ability to stretch, the main component of ligaments and tendons, collagen is the main component of the extracellular matrix. It keeps the skin elasticity, and the aging of collagen, the skin wrinkles.Collagen is also a major component of cornea of the eye. Collagen products in the digestive process of collagen and other proteins are also the same. Since the human body is difficult to directly absorb proteins or peptides, oral protein, peptide after almost every digested into amino acids in the digestive tract before being absorbed by the body. And for a small part of the body may be directly absorbed peptide present in the relevant field of core academic journals, there is no evidence "produced after the degradation of collagen peptides" can produce human collagen synthesis markedly different from the effect of other proteins .