Background: Proper breastfeeding practices during infancy and childhood are essential for attaining and maintaining proper nutrition and health, and for overall development of infants and children. Objectives:1) To find out the prevalence of appropriate breastfeeding practices.2) To evaluate the association of appropriate breastfeeding practices with child’s nutritional status. Methodology: Community based cross sectional study. Children from urban slums were examined. A Simple Random Sampling method was followed. House to house survey was carried out for data collection regarding breast feeding practices with the help of questionnaire in the field. Anthropometric measurements were also taken. Data was analyzed with the help of SPSS ver. 20 and appropriate tests were applied. Results: Total 400 children were examined, out of which174 were females and 226 were males. Out of 400 children 164 children still continue the breastfeeding; while 236 children had stopped breastfeeding, out of which only 62 children were breastfed for adequate duration while 174 children are inadequately breastfed. Inadequately breastfed children are often fall sick and hospitalised for common diseases such as diarrhoea, vomiting, fever, cough etc. Only 24% mothers initiate breastfeeding on time. Delayed initiation of breastfeeding is prone to develop malnutrition especially underweight with highly significant statistical difference with p value 0.009 (χ2 = 6.8, OR = 1.91, C.I. = 1.14–3.26).Conclusions: More than 3/4^th of mothers do not initiate breastfeeding on time. Delayed initiation of breastfeeding leads to deprivation of colostrum to baby. Inadequately breastfed baby are more prone to infectionsdueto low immunity.