Objectives: 1.To study the knowledge about breast feeding practices among post-natal women. 2. To assess the effectiveness of health education session in increasing the knowledge about breast feeding practices among the post-natal women. Material and methods: An interventional study involving health education as the intervention conducted through audio-visual aid and lecture method. Knowledge was assessed as pre-test and post-test using prestructured questionnaire through interview method. Effectiveness was assessed through the increase in post test score compared to pre-test score. Results: Study showed that there was significant difference (p=0.000) between average score of pre test knowledge (14.25) and post test knowledge (18.40). Pre-test score ranged from 8 to 17 whereas post-test score ranged from 15 to 20. Conclusion: There was poor knowledge regarding some aspects of breast feeding practices among post-natal women. Health education session was effective in improving the knowledge about breast feeding practices among the postnatal women.