Whether or not a nine-month-old baby can top up a meal of milk with a complementary feeding is determined by the specifics of the baby’s complementary feeding. It is best to ensure that breastfeeding is done at least 3~4 times a day, providing about 700~800mL of milk for the baby. Usually, six months before the baby exclusively breastfeeding or formula feeding, can meet the needs of its growth and development; but more than six months of the baby to start in a small amount between the two milk to add complementary foods, such as rice flour, puree, egg custard, etc., should be based on the baby’s situation, follow the principle of from dilute to thick, from less to more, when the baby’s amount of complementary foods increased, the number of breastfeeding can be gradually reduced. Nine-month-old baby gastrointestinal tract digestive function enhancement, has been able to eat through a larger amount of complementary foods. However, whether a nine-month-old baby can top a meal of milk with complementary foods should be judged according to the specific situation of the baby eating complementary foods. It is best to ensure that breastfeeding is done at least 3~4 times a day, providing about 700~800mL of milk for the baby. As the month grows older, the number of breastfeeding should be gradually reduced so that the baby is transitioning from breastfeeding to eating.