Vitamin B12 can promote the development and maturation of red blood cells, make the body's hematopoietic function in a normal state, and prevent pernicious anemia; Present in the form of coenzymes, it can increase the utilization rate of folic acid and promote the metabolism of carbohydrates, fats and proteins; It has the effect of activating amino acids and promoting the biosynthesis of nucleic acids, which can promote the synthesis of proteins, which plays an important role in the growth and development of infants and young children; It is an indispensable vitamin for sound nervous system function, participating in the formation of a lipoprotein in nerve tissue, and maintaining nervous system health.