Yogurt can be given to babies over the age of 1, but formula is not recommended within the age of 3. Yogurt contains a large amount of probiotics, such as lactobacillus or lactobacillus, and the intestinal barrier of children within the age of 3 has not been fully established, so there is a risk of bloating and diarrhea. 1-3 years old can give milk twice a day, not to be replaced by milk, or soy milk. Yogurt should not be given in large quantities, especially since it requires refrigeration, and should not be given directly from the refrigerator, as it may cause indigestion in children.