Two-year-old babies can drink old yogurt. Because when the baby is 2 years old, basically the gastrointestinal function is much improved. If the gastrointestinal absorption is better, then you can feed the child some yogurt, because yogurt is better for the human gastrointestinal tract, and it can also Improving the intestinal flora helps digestion and promotes intestinal absorption, which is good for the healthy development of the baby.