1, animal liver is rich in various nutrients, which is the first choice to prevent iron deficiency anemia. Every 100g pig liver contains 25mg of iron, which is also easily absorbed by human body. The liver can be processed into various forms of children's food, such as liver sludge, which is convenient for infants to eat. 2. Although the content of iron in various lean meats is not too high, the utilization rate of iron is similar to that of pig liver, and it is easy to buy and process. Children also like to eat. 3. Egg yolk contains 7 mg of iron per100g. Although the iron absorption rate is only 3%, eggs are easy to get, convenient to eat and store, and rich in other nutrients, which is a good food for iron supplementation. 4. The utilization rate of iron in pig blood, chicken blood and duck blood is 12%. If you pay attention to cleanliness.