India has high prevalence of nutritional anaemia. Vitamin B12 deficiency is a hidden condition which presents as anaemia. Children will often present with or without various clinical signs. Most common symptoms includeweakness, lethargy, feeding difficulties, failure to thrive and irritability. A prospective cross-sectional study was undertaken in Pediatric ward on infants between 6 months to 12 months. In our study the mean age was found to be 9.7 months and more associated with vegetarian diet. Morphologically macrocytic anaemia is seen in Vitamin B12 deficiency and MCV >70 and MCHC>34 is also significant with B12 deficient states.