Infants under one week of age should still be milk-based, and complementary foods should be added on top of the 700 to 800 ml of milk per day. The first complementary food to be added should be egg yolk. The iron stored in the body of a newborn comes mainly from the mother. The iron stored in the body of a full-term newborn is very limited, and is only enough for hematopoiesis four or five months after birth. Premature babies and multiparous babies get even less iron from their mothers. The younger the gestational age and the greater the number of fetuses, the less iron there is in the body. Full-term newborns can add egg yolk to their main diet 3-4 months after birth, and preterm and multiparous infants can start from the first month of life. Add egg yolk as follows: Boil the egg, shell it, remove the yolk and grind it into powder. Start by feeding 1/8 of an egg yolk per day, and gradually increase to 1/4, 1/2, and up to the whole yolk. The egg yolk powder can be mixed with boiling water and given to the baby between feedings; it can also be directly mixed into rice flour; around 6 months old, you can switch to egg yolk porridge; at 7 or 8 months old, you can eat steamed eggs (including egg whites). Tips: 6 months old babies should not be fed egg whites. 6 months old babies’ digestive tract mucous membrane barrier is not fully developed, and the protein molecules in egg whites are small and can easily enter the bloodstream through the intestinal mucous membrane, causing allergic reactions, such as eczema and hives on the skin. The way to add rice flour Do not add supplemental food to your child before bedtime. When I first started adding supplemental foods, I was taught to add some rice flour to the milk before bedtime, saying that it would be more filling and sleep longer. However, I found that my baby did not sleep very long, and I still got up several times during the night to feed him. Later I consulted my pediatrician, who told me that the truth is that milk is more resistant to hunger than rice flour, because the nutrients in milk are far better than rice flour. You should give your child a full feed before bedtime (around 10:00). The correct way to add complementary foods is to add the first time in the morning, the doctor said that even if there is any discomfort, you can still go to the doctor in the afternoon. 6 months is enough to add one complementary food a day, after 6 months, you can add another meal of rice flour or porridge in the evening around 6 o’clock (i.e. 6 o’clock, usually dinner time), until 10 o’clock is still a large bottle of milk, so that the baby is very full and can sleep well at night. Rice flour is treated as a main meal, and after feeding late rice flour is also fed again at intervals of 3~4 hours. The first time you can make it thinner and put it in a bottle for him to suck, gradually thicken it, and after two weeks you must transition to spoon feeding instead of using a bottle. As the child’s gastrointestinal function is sound, while adding rice flour, you can also add chicken, duck, pig and other animal blood, as well as lean ground meat, fish puree, pig liver puree, chicken liver puree and other iron-rich and easily absorbed foods, which can be directly transferred into the rice flour. Be careful not to add any condiments under the age of 1 week. Adding fruit and vegetable juices. Infants and toddlers should not drink synthetic drinks from the market, but use special baby drinks or their own freshly squeezed juices and dilute them 1:1 with water before drinking. You can also make your own vegetable juice. The method is to wash fresh vegetables, cut them into small pieces, add water and boil them thoroughly to get the juice (just juice) to drink, such as celery juice is effective for constipation, carrot juice is effective for diarrhea. The main points of adding complementary foods: from single to varied, from little to much, from thin to thick, from soft to slightly hard. The correct order of adding complementary foods is: from 4 months of age, vegetarian foods can be added from 6 months of age, meat (meat) foods can be added from 9 months of age, seafood can be added from 9 months of age.