Background: Central to the sustenance of adequate nutrition and optimal growth during infancy and early childhood are the practices of complementary feeding. These practices, encompassing the introduction of solid foods alongside breastfeeding, play an influential role in laying the foundation for a child’s nutritional status and developmental outcomes. This complex issue is influenced by a multitude of factors, including socioeconomic status, parental attitudes, hygiene practices, and child-feeding practices. The present research is done to study the impact of nutritional and educational intervention on the nutritional status of malnourished children in the urban slums of Lucknow District. Methods- A quasi-experimental design was adopted for conducting the study. The purposive sampling method was used to collect samples for this study. A sample of 400 mothers included their 400 children aged 6 to 24 months from different urban slum areas of the community. 201 children were found to be malnourished among 400 children. The treatment group had 96 malnourished children and the control group had 105 malnourished children taken from 16 Anganwadi’s. Educational nutritional intervention was given for duration of 6 months and pre and post-testing of nutritional status was done to see the impact of the intervention. Results: After the intervention, the treatment group had a statistically significant improvement in weight and length Z- score (Standard deviation) and mid-upper arm circumference (MUAC) while the control group did not. The analysis highlights the effectiveness of the intervention in improving the nutritional status of malnourished children.