1. Reasons for changing milk powder for young children 1.1 The ingredients of milk powder are not suitable for age growth 1.2 The taste of milk powder is not suitable for young children\’s taste 1.3 The nutrition of milk powder is insufficient or excessive. Early childhood is the period when the human body grows and develops fastest, and it is also the period when the human body has the highest nutritional demand. Therefore, the dietary health of young children has attracted much attention from parents. Among them, milk powder, as one of the common complementary foods, plays an important role in young children\’s diet. However, as babies grow older, parents need to consider whether they need to replace milk powder. First of all, the ingredients of milk powder are not uniform.