Preterm babies can usually add complementary foods at around 6 months of age. Preterm babies are born with weaker body resistance than full-term babies, and the development of gastrointestinal tract is also slower, so you can usually start to add complementary foods at 6 months. Of course, this is not absolute, but also need to look at the baby’s growth and development, as well as weight gain and organ function of the condition of judgment. If the development of all aspects of the indicators are good, in 6 months can add complementary food. When you start to add complementary foods, you should choose foods that are not easy to cause allergies, and the addition of complementary foods should be gradually increased from one to many, to make sure that your baby is well adapted to one food, and then add another food. Supplementary foods should be gradually adjusted according to baby’s development, from thin to thick, and then from powder to lump.