Anti-anemia APIs are a class of compounds that can supplement special hematopoietic components or stimulate bone marrow function for the treatment of anemia. According to different types of anemia, anti-anemia APIs are divided into iron preparations for the treatment of iron deficiency anemia (hypochromic anemia) caused by chronic blood loss, insufficient nutrition, iron deficiency in the body, folic acid and vitamin B12 for the treatment of megaloblastic anemia (hyperchromic anemia) caused by folic acid and vitamin B12 deficiency, and cobalt chloride for the treatment of aplastic anemia due to bone marrow hematopoietic insufficiency or failure.