Among 258 women visiting for a scheduled check-up at 1 month postpartum, the predictors, independently associated with practice of exclusive breastfeeding, were correct knowledge of breastfeeding before hospital discharge (aOR 2.23 (1.2 - 4.0)), educational level from 6th to 12th grade (aOR 3.46 (1.07 - 11.22)), living with a senior (aOR 3.22 (1.81 - 5.74)) and having no-specific occupation (aOR 0.25 (0.12 - 0.53)). Conclusion: Correct knowledge of breastfeeding before hospital discharge is positively associated with practice of exclusive breasfeeding at one month postpartum.