The difference between second and third stage milk powder lies mainly in the type and content of nutrients. Of course, the age of adaptation is also different: the second stage of milk powder is mainly suitable for babies aged 6-12 months, because the diet of babies in this time period is mainly provided through formula or breast milk, and the addition of various nutrients in formula focuses on providing relatively high levels of calories, protein, fat, carbohydrates, and at the same time properly fortified with calcium, iron, zinc and other mineral nutrients; the third stage The milk powder is suitable for babies over 1 year old, as this time the baby has started to eat other foods such as rice and noodles, the content of energy-supplying nutrients and calories in the formula is relatively low, while the content of mineral nutrients, trace elements, DNA, etc. is relatively high, which helps the baby’s physical, intellectual and visual development.