Iron is a trace element required by the human body and is an important raw material for the synthesis of human hemoglobin. Iron deficiency can be supplemented by eating animal offal, seafood, fruits and vegetables, soy products, etc., and if necessary, iron supplementation drugs. 1, animal liver: such as pig liver, duck liver, chicken liver, etc., the iron content in animal liver is high and easily digested and absorbed by the body, but should not be consumed in excess to avoid high cholesterol content in the blood; 2, seafood: such as razor clams, clams 2, seafood: such as razor clams, clams, oysters and other shellfish and sea fish, in addition to high iron content, but also rich in vitamins, proteins, minerals, etc.; 3, fruits and vegetables: such as mulberry, sour dates, coconut, strawberries, fungus, enoki mushrooms, celery, etc., fresh fruits and vegetables are rich in vitamins and iron, moderate intake for the body to replenish iron; 4, soybean products: such as tofu, soy milk, tofu skin, etc., not only contains a lot of Iron, zinc and vitamin B1, but also rich in protein. In addition, red lean meat, animal blood products and other iron content is also high, but it should be noted that the daily consumption of these foods can only play an auxiliary role, and can not replace drug treatment. It is recommended that patients with severe iron deficiency take iron supplementation drugs, such as ferrous sulfate and iron dextran, under the guidance of a doctor. Patients may experience side effects such as nausea and burning sensation in the stomach when taking iron supplements, which can be taken after meals to reduce nausea and other side effects.