Many families of infants and toddlers worry and are too careful about adding complementary foods. After four months of breastfeeding, the baby’s gastrointestinal system is basically ready to try new kinds of food. Babies are most individualized in their drooling and interest in adults chewing food, and it is then that you can try to lick the food broth for your baby to satisfy the development of the infant’s sense of taste. This phenomenon occurs generally 4-6 months, but each baby is different, so there are early and late, parents do not have to worry. The most important principle of adding complementary foods, besides what you usually see on the Internet, is to add the foods that the mother prefers first, and then add the foods that the father prefers. This can well minimize the occurrence of allergic reactions. It is also a truth that everyone understands that one side of the soil raises one side of the people.