Babies 4-6 months can start to add complementary foods, the specific time to be based on the baby’s individual constitution, should be specific analysis of specific problems, usually not earlier than 4 months, not later than 6 months. If the baby’s digestive function is good after 4 months, parents can start to try to add complementary foods, it is recommended to start from the rice flour or egg yolk, such as the first to give the baby half of the egg yolk, and then gradually increase to the whole egg yolk, and so on. If the baby’s gastrointestinal function is not good, you need to adjust the baby’s gastrointestinal function before adding complementary foods. When adding complementary foods, it is recommended to follow a step-by-step process from less to more. If the baby does not have diarrhea or vomiting after adding a complementary food, and the digestive function is normal, then you can try to add another one. In addition, during the addition of complementary foods, parents should also pay attention to cultivate the baby’s eating skills and develop good eating habits, which is conducive to the growth and development of babies.