Lactoferrin is equivalent to breast milk, which can be eaten for a long time and is suitable for newborn babies. Lactoferrin is the core immune protein in breast milk, which can help infants resist harmful microorganisms such as bacteria and viruses, and prevent common diseases such as respiratory tract infection and diarrhea caused by viruses. Natural breast milk is the most precious food for newborns. It is very important to add LF to the food for artificially feeding babies to improve the protection and immunity of such foods.