Treatment Oral iron: ferrous sulfate, ferrous fumarate ferrous gluconate. ferrous succinate, etc VitC effect: in 1 week:Ref↑ in2 weeks:HB个 in 2 monthS: normal peripheral blood maintenace therapy for 3-6months ineffective: insufficient dose, malabsorption, iron loss> iron intake, medicine of poor quality, wrong diagnosisTreatment Oral iron：ferrous sulfate，ferrous fumarate, ferrous gluconate, ferrous succinate, etc. ＋ VitC effect：in 1 week：Ret↑ in 2 weeks：HB↑ in 2 months：normal peripheral blood, maintenace therapy for 3-6months ineffective：insufficient dose，malabsorption， iron loss> iron intake， medicine of poor quality，wrong diagnosis