PURPOSE The purpose of this study was to determine rate of breastfeeding practice at 3 months and to examine predictors for breastfeeding practice. METHOD Study subjects were 114 mothers who gave birth at one hospital in Busan area. Data regarding breastfeeding practice and potentially related factors to breastfeeding were collected through a self-administered questionaire at 1 weeks and a telephone survey at 3 months. Logistic regression was used to identifiy significant the predictors on breastfeeding practice. RESULT Rate of breastfeeding practice was 46.5% at three months of postpartum. The significant predictors for performing breastfeeding were lower the experience of breastfeeding trouble problem(OR=.88 compared with breastfeeding women, 95% CI; 78-.99), higher first breastfeeding satisfaction (OR=1.81 compared with non-breastfeeding women, 95% CI; 1.08-3.32), higher breastfeeding confidence(OR=1.84 compared with non-breastfeeding women, 95% CI; 1.08-3.32). CONCLUSION The findings suggest the necessity of support program for mothers during the positive postpartum period to provide correct information about breastfeeding knowledge and attitude and to teach problem-solving skills for any breastfeeding problems for highere rate of breastfeeding practice.