What food supplements can be added to the baby for 4 months?

Four months baby is still very small, gastrointestinal function is not sound, digestive function is still relatively weak. Four months baby can only add a little milk powder, can drink a drink. Sometimes you can add a little more digestible batter, can also give him a drink, can also drink a little rice flour, is rice flour with vegetables. These things can not be eaten too much, to gradually add, from once to twice, can not eat too much, eat too full. Four months can only eat these things, if the child full-term birth or is a huge child, some weight more than 10 jin children, sometimes add a little especially rotten porridge, millet soup can also be.