The segments of milk powder must be fed to the child in accordance with the segmentation, which is based on the nutritional composition of breast milk and formulated according to the digestive and absorption capacity of the baby’s gastrointestinal tract and the needs of the baby’s growth and development for various nutrients. Different segments of milk powder are suitable for different age groups of babies to eat, if the baby from birth to one or two years old are fed with the same segment of milk powder, it will lead to inadequate intake of various nutrients, can not meet the needs of growth and development, so that the baby height, weight growth is slow, prone to iron deficiency anemia, protein malnutrition, rickets and other diseases, and even lead to abnormal intellectual development. Therefore, when using formula to feed your baby, be sure to choose the appropriate segment of formula feeding according to the baby’s age.