This hospital based cross sectional analytic study was carried out in department of Pediatrics Dhaka Medical College Hospital and Combined Military Hospital from July 2009 to June 2010 to find out the relationship of iron status with febrile seizure in children. Sixty children aged 6 months to 5 years having febrile seizure were enrolled as cases after taking proper consent by purposive sampling. Sixty age matched children with fever but no seizures were taken as control after taking proper consent. Children having a febrile seizure, developmental delay, hemorrhagic disorder, severe malnutrition or micronutrient deficiency and abnormal CSF findings were excluded from the study. In cases after control of seizure 2 ml of CSF was taken for cytology, biochemistry, Gram & AFB staining. Two milliliter of blood from cases as well as control was collected, released to EDTA bottle for Hb, MCV and MCHC. Again 2 ml of blood was taken in plain test tube for testing serum iron, TIBC and for serum ferritin. Serum iron, TIBC, serum ferritin was estimated by automated analyzer (PENTRA for serum iron, DADE BEHRING for TIBC, IMMULITE 1000 for serum ferritin). There was no significant difference between two groups regarding age (p>0.05), sex (p>0.05). High fever (p<0.001) and continuous fever (p<0.001) was significantly associated with febrile seizure. Seizure was generalized in all with positive family history in 83.3% cases. The Mean±SD of blood Hb (Case 9.8±1.6; Control 10.7±0.9), MCH (Case 22.1±2.3; Control 24.3±3.6) & serum ferritin (Case 55.1±29.3; Control 99.6±81.9) level were significantly low associated with febrile seizure (p<0.05). No significant difference was found between cases and control regarding MCV, serum iron and serum TIBC.