The utility of identifying CHr in peripheral blood samples for the diagnosis of iron deficiency has been shown in numerous research. It has been demonstrated to be a trustworthy iron marker for determining the effectiveness of iron therapy and providing an accurate evaluation of iron status. Aim of work: To assess the importance of reticulocyte Hb (CHr) in the diagnosis of IDA and compare CHr with other iron indicators, particularly transferrin saturation and serum ferritin, in order to better manage children with iron deficiency anaemia. Methods: Our study was a review article, interpreted in the out-patient hematology clinic, pediatrics department, Zagazig University Hospital during six months from September 2022 to February 2023. Approval was asked from the institutional review board (IRB) (9660-26-7-2022). Many studies related to our subject were collected, analyzed and a narrative review of our findings was performed. Conclusion: The associations between CHr and common haematological and biochemical indicators of iron deficiency anaemia show that CHr can be a reliable indicator of IDA