In terms of basic composition, protein peptides in the form of small molecules are the same as protein in food, and they are all composed of amino acids necessary for human body. The digestive system of healthy people can decompose these protein into small amino acid molecules by protease, and supply them to all parts of the human body. But for people who are already very weak, their digestive ability is very poor. Even if they eat a lot of protein, they can't digest it. However, the small protein peptides formed after hydrolysis can be easily converted into amino acids, and then new cells and tissues can be synthesized through damaged blood circulation and aging tissues. What is described above is the efficacy and function of small molecular protein peptides, which can improve the utilization efficiency through smaller and simpler molecular structures. Especially for people who have just experienced surgery, it will be very effective to restore the wound, and it can also participate in the reconstruction of the immune system, so that patients can quickly establish a strong immune function and avoid recurrence.