Improper complementary feeding or complementary feeding practices, coupled with high rates of infectious diseases, are the principal proximate causes of malnutrition during the first two years of life. For this reason, it is essential to ensure that mothers and caregivers are provided with appropriate guidance regarding optimal feeding of infants and young children. The present study was planned to assess the knowledge about the complimentary food and its impact on nutritional status of the childrens. Total 25 cases of the malnutrition referred to the Upgraded Department of Paediatrics, Patna Medical College and Hospital Patna from Sept 2018 to march 2019 were enrolled in the present study. Data on feeding practices was collected by interviewing mothers using a pre-tested semi-structured schedule. The data generated from the present study and the reported literature concludes that Improvement in child care and feeding practices could positively impact nutritional status of children. These interventions need to be at the household level using positive deviance approach and behavioural change communication strategies. It may be necessary to invest in community level change agents to facilitate the process especially in an already overburdened health system.