With the continuous development of the economy, people’s food, clothing, housing and transportation have been greatly improved, especially for families with only one child, the arrangements for children in terms of food and clothing are almost “perfect”. However, under such good conditions, many children still have anemia, what is the reason? As iron is an important substance for the synthesis of hemoglobin, anemia will occur when iron supply is insufficient. The iron used by children for hematopoiesis is, on the one hand, brought from the mother’s body to be used, and on the other hand, taken from iron-containing food, the latter being the main source. If the supply of iron-containing foods is insufficient throughout the developmental period of the child (especially during the rapid growth period), anemia can occur. If the baby grows to 4 months old, the iron brought from the mother has been used up, and human milk or milk are not enough iron, if not supplemented with iron-containing food in time, anemia will occur. 2, lack of scientific feeding knowledge Parents of only children are too indulgent, let children eat milk, eggs or chocolate all day long, thinking that this is nutritious, in fact, these foods are not a good source of iron. Each 500 grams of milk contains 1.0 milligrams of iron, a 1-year-old child needs 8 milligrams of iron per day, if provided simply with milk, you have to eat 4000 grams of milk per day, so a lot of milk intake, not only squeeze out the intake of other diets, but also harmful to the body, such as “milk anemia” is caused by the daily consumption of a large number of Fresh milk, making allergic children caused by chronic bleeding in the intestinal tract. In addition, eating high-calorie foods such as chocolate and creamy snacks will make children lack hunger and reduce the amount of food they eat without getting other essential nutrients, and these foods contain little protein and iron, which will eventually lead to anemia in the long run. In infancy and early childhood, children are prone to develop unhealthy eating habits such as partiality and picky eating, which can also cause anemia in children if parents do not pay attention to this. 3. Physiological factors School-age children, especially in the rapid growth period, need to increase their iron intake due to fast growth and high exercise, especially after the onset of menstruation in girls, and if the food supplied contains little iron and is not obtained from iron supplementation drugs in time, anemia will occur. So, how to prevent it? The following methods are provided here for your reference. 1, advocate breastfeeding because the bioavailability and absorption rate of iron in breast milk are higher than that of milk; after 4 months, egg yolk, liver puree, minced meat, bean flour, boiled vegetable leaves and other supplementary foods containing iron should be added; milk-fed children should be added earlier than 2-3 months. The daily requirement of iron in pediatric period is 10-15 mg, 20 mg per day for adolescent girls, when the daily provision of iron content in food does not meet this requirement, should be taken from the iron supplement drugs. 2, master the scientific feeding skills The food provided must be combined with the age of the child, digestive function and other characteristics. Nutrients should be complete, the amount and proportion should be appropriate, food should not be too fine, too much sugar, too greasy, too strong seasonings and with stimulating. Its variety should be diversified, do not destroy nutrients when cooking, and to do color, aroma, taste, to increase the appetite of children. 3, to eat more fresh vegetables, fruits vegetables, fruits and other rich in vitamin C, help the absorption of iron in food. Because each food can not supply all the necessary nutrients, so the deployment of meals must be balanced. 4.Correct some bad eating habits such as forced and induced eating as well as picky eating and partial eating, and thoroughly treat various chronic blood loss diseases.