Background: Exclusive breastfeeding (EBF) is the best nutrition for children during the first six months of life. However EBF remains a challenge. The aim of the study was to assess Constraints to Exclusive Breast Feeding Among Postpartum Mothers in Selected Rural Area in Mangalore, India. Methods: A community based descriptive study was conducted among 165  Postpartum mothers  who met the inclusion criteria and are residing in a selected rural area at Mangalore, in June 2018 were selected in the study . Data collection:The study was conducted by the researcher herself from eligible mothers.  Results: In the present study only 41 % of mothers were exclusively breast fed their child until one month 35 % up to 3 months and only 25% up to 6 months In this study identified various constraints to exclusive breastfeeding and also there were relationship between the variables on continuation of exclusive breastfeeding among mothers during the first six months of postpartum.Conclusion:This study identified many constraints that caused cessation of EBF among mothers during the first six months of postpartum .Healthcare providers have an important role in identifying potential constraints and maternal concerns, and providing the support to overcome the challenges faced with EBF. The findings of this study underwrite to the body of knowledge underlying the constraints associated with the continuation of EBF among mothers during the first six months of postpartum period.