Anemia caused by aortic coarctation surgery needs to be treated according to the severity of anemia, such as food supplements and medication to improve anemia, while severe anemia can choose timely blood transfusion. 1. Dietary supplements: Eat more iron-rich foods, such as animal liver or blood, including pig liver, pig’s blood, pig belly and duck’s blood, etc. Eat more protein-rich foods to strengthen the body, such as lean meat and eggs, etc. Protein belongs to the basis of blood cell proliferation and differentiation. 2. Supplemental iron: postoperative anemia can be treated by supplemental iron, such as ferrous sulfate tablets, ferrous lactate tablets and ferrous fumarate tablets. 3. Severe anemia: If the patient has severe anemia or very severe anemia, he/she needs to receive blood transfusion as soon as possible, for example, red blood cell suspension can be transfused to alleviate the symptoms of anemia as soon as possible. It is recommended that patients who develop anemia after aortic coarctation should consult the doctor in time and receive comprehensive treatment under the doctor’s guidance, so as to avoid delaying the condition.