The need to change the formula depends on the age of the child, 1-6 months of age can choose a paragraph of milk powder; 6-12 months of age can choose two paragraphs of milk powder; 12-18 months of age can choose three paragraphs of milk powder. Do not always change the brand of milk powder for your child, most children will have a certain dependence when drinking milk powder, often changing the brand of milk powder for your child is not conducive to growth and development, and can easily affect the child’s digestive function, and even cause diarrhea phenomenon. If it is necessary to change the infant’s milk powder, it is necessary to master the time to change the milk powder, if the infant is less than 6 months, it is not recommended to change the milk powder otherwise it will affect the infant’s stomach, please choose the small package of milk powder first when changing the milk powder to avoid the infant’s waste. Because the new formula cannot be adapted, and when choosing the formula you should choose a taste similar to the original formula so that the infant will usually like to drink it, you must pay attention to the infant’s physical condition after replacing the formula and stop consuming the formula if you feel uncomfortable.