4 months and above the baby can eat rice flour, babies from birth to 3 months when the salivary glands are very little, salivary glands contain amylase and digestive enzymes are also quite small. 4 months after the digestive function is gradually strengthened, you can begin to add complementary foods for babies, complementary foods to add iron to rice flour as a first choice, because at this time breast milk or formula in the amount of iron can not satisfy the baby’s growth needs. Give the baby to eat rice flour to follow the principle of less to more than enough to add, so that the baby’s stomach and intestines have a process of adaptation to avoid adding too much, aggravating the burden on the baby’s stomach and intestines.