When buying formula for your child, you should try to choose a formula whose nutritional composition is close to the nutritional composition of breast milk. The main nutrients that need to be focused on when choosing milk powder include: 1, protein: the level of protein content is the main indicator to assess the nutritional value of milk powder, the main component of milk powder is based on milk, adding some other ingredients, fortified with certain nutrients formulated, the protein in the formula should not only meet the standard, the ratio of casein and albumin must also be appropriate; 2, calcium: Formula milk powder needs to contain a certain percentage of calcium, which is beneficial for the baby’s bone development; 3, taurine: formula milk powder with a certain amount of ingredients to promote the baby’s intellectual and visual development, mainly taurine and choline. 4, there are other vitamins A, D, E, B, etc., iron, magnesium, potassium, phosphorus, selenium and other mineral-based nutrients.