Abstract Aim: To assess the knowledge regarding meaning of supplementary food among mothers of infants; regarding importance of supplementary food among mothers of infants; regarding principles of supplementary food among mothers of infants, and regarding cost effectiveness of the home preparation of supplementary food among mothers of infants. Materials and Methods: The study will be conducted at selected urban slums of Navi Mumbai among mothers of infants. The urban slums are shiravone, belapur, nerul phase I& II. 300 Mothers of infants were included in the study. Results: In the present study, we observed that out of 292 subjects who were mothers of infants at urban area, maximum 52% of mothers were in the age group of 25-29 and 31% and 14% are in the age group of 20-24 and 30-34 respectively. Among education of mothers of infants at urban area, 38.4% of the mothers were completed her secondary school education, 15% of mothers were illiterate, 28.4% and 18.2% were completed her primary school and higher secondary respectively. Out of 292 subjects, 44 % families had 5000-10000 income per month, 31.8% families have 10000-15000 income per month, less than 5000 income only in 11.6% families and only 9.6 % of families have more the 15000 income per month. Most of the families are nuclear families 55.1% and 32.2% families were joint families. Out of 292 samples only 183 (62.7%) of father were private employee and only 34 (11.6%) were on government employee, 53 (18.2%) were business man. But in case of mother, most of the mothers 120 (41.1%) were at home, 39 (13.4%) were on service, 110 (37.7%) were house maid and 21 (7.2%) of mother were doing business. Out of 292 subjects, 242 (82.9%) of women belongs to Hindu background, 132 women (45.9%) of women were having two children133 women (45.5%) women were two infants. 99 women (33.9%) of women have not maintained any space between children at least 6 months. 200 women (68.5 %) of women belong to Non- Vegetarian group and 7