Infusion is intravenous drip, iron deficiency anemia need to supplement iron, generally oral can be, if oral appeared serious gastrointestinal reaction can be intravenous drip, so that hemoglobin back to normal, the effect is better. Various causes of iron deficiency anemia need to supplement iron, generally oral, commonly used ferrous sulfate, iron dextrose. However, there are often nausea, vomiting and other gastrointestinal adverse reactions, gastrointestinal reaction is small and easy to tolerate after meals. If the adverse reaction is serious and cannot be tolerated, parenteral iron supplements such as iron sucrose and iron dextrose can be used to supplement through intramuscular injection or intravenous drip. Intravenous supplementation of iron is faster, through the supplementation of iron can increase the body’s iron stores, so that the hemoglobin back to normal, improve the symptoms of anemia. At the same time, actively treat the original disease. It is recommended to carry out standardized treatment under the guidance of doctors. The above drugs should be used under the guidance of a doctor.