Small molecule collagen is white, opaque collagen, distributed in the connective tissue, the formation of human skin, blood vessels, bones, tendons, dental cartilage have a very important role, is the main material basis of connective tissue. Small molecule collagen is rich in animal body protein, its main component is 18 kinds of amino acids, so it mainly has the role of promoting cell growth, hemostasis, degradation and so on. In addition, small molecule collagen also has a certain strong body, health care effects, but also to promote bone growth and development, rheumatoid arthritis, rheumatic bone disease, rheumatoid arthritis, there is a good repair of the joint cavity and therapeutic effect. Small molecule collagen also has a certain whitening, moisturizing and skin care effects.