Babies are generally recommended to start adding complementary foods after 6 months, add complementary foods to follow the principle of from little to much, from thin to thick, from soft to hard, from fine to coarse, from a single species to a variety of principles. 1. From less to more: when adding complementary foods to the baby to add a small amount, observe the baby’s condition, there is no vomiting, diarrhea, etc., if there is no discomfort, gradually increase the amount, do not start to add too much complementary food, so as not to cause gastrointestinal dysfunction. 2. From thin to thick: when your baby is just starting to add complementary foods, try to focus on pureed foods and fruit juices, and then slowly transition to powdered foods and finely chopped foods. 3. From soft to hard: the baby just started to add complementary foods, the first to give thin mud-like food, as the baby grows older, the food has a certain hardness can promote the child’s teeth eruption and the formation of chewing function. 3. From fine to coarse: baby just added complementary foods, first of all, let the baby eat a single fine pureed food, and then slowly let the baby try appropriate crushed food, to help the baby learn to chew. 4. From single to multiple: When babies just start to add complementary foods, the main reason for applying the single food introduction method is that babies are afraid of developing food allergies. Each kind of vegetable puree (puree) taste 1 ~ 2 times / day, until 3 ~ 4 days after the baby is accustomed to change another, in order to stimulate the development of the sense of taste. As baby grows up then slowly mix a variety of foods for baby to eat. Baby in the process of adding complementary foods, pay attention to observe whether the baby has allergies to complementary foods, usually also need to regularly take the baby to the hospital for health checkups, at any time to find problems at any time to deal with.