Almost every Indonesian mother breastfed their baby, only 15,4% mothers in cities and 18% in rural exclusively breasfed their babies up to 6 months. WHO-UNICEF recommends developing a supprting group in the community who will assist a childbed mother for successfully breastfeeding. A quasi experiment was held in Kebayoran Lama Utara, sub district of Kebayoran Lama Jakarta selatan, and 30 childb…