Moderate anemia in babies refers to a child’s hemoglobin concentration between 60-90g/L. Moderate anemia in babies can cause obvious harm to children, and the common hazards are: a. After anemia, children will experience dizziness, weakness and other symptoms of insufficient blood supply and oxygen supply to the brain, and in serious cases, children will cry at night, become restless and unable to sleep normally, which will eventually cause mental development disorders. Second, due to moderate anemia, the child’s limb muscles will have less blood and oxygen supply, which will lead to immobility and decreased activity, and eventually affect the neuromuscular development. Third, due to moderate anemia, the child’s blood supply to the digestive tract is reduced, which will lead to poor appetite, constipation, diarrhea and other indigestion symptoms, and eventually cause malnutrition.