Generally speaking, formula is best to drink when the baby is around 6 months old, depending on whether the milk of the breastfeeding mother is sufficient or not. If the baby is artificially fed, he or she should drink milk promptly when hungry; if the baby is mixed-fed, it is recommended to feed before bedtime. Usually, for babies aged 0-6 years, breastfeeding is clinically recommended to be the best. Because breast milk contains all the nutrients and antibodies needed for the growth and development of newborns, such as rich protein, fat, immunoglobulin and trace elements, the nutrients are complete and safe, which is especially important for the growth and development of babies within 6 months. At the same time, the immunity of breastfeeding is generally better than that of simple formula feeding. 6 months old can gradually add formula and complementary foods, and if it is mixed feeding, it is better to drink at night, which is good for sleep and absorption; if it is simple formula feeding, you need to feed your baby when he is hungry. In addition, when feeding formula, you need to pay attention to control the amount of formula and feeding time each time, brewed and cooled to the matter temperature for feeding; at the same time, you can give your baby the right amount of water to drink between formula.