The treatment principles for iron deficiency anemia mainly involve two aspects. One is to identify the cause of the iron deficiency anemia. Once the cause is confirmed, fundamental treatment of the cause should be conducted to restore the body's normal iron stores. The second aspect is iron supplementation, which is recommended to be administered orally. The daily supplemental iron dose is approximately 150 to 200 milligrams, typically using ferrous preparations such as ferrous succinate, ferrous fumarate, ferrous gluconate, and iron dextran. It is suggested that iron supplements be taken with meals or after meals to reduce gastrointestinal irritation caused by the medication. Additionally, it is advised to avoid consuming tea, coffee, and other substances that could interfere with iron absorption during the treatment period.