The coverage of exclusive breastfeeding in Indonesia 2018 reaches 37.3%, this coverage rate is still lower than national target of 80%. Sungai Ulin Public Health Center has the lowest coverage in exclusive breastfeeding compared all public health centers in Banjabaru City which are only equal to 17.80% and 18.52% in 2017. The purpose of this study was to analyze the effect of booklet media with interactive lecture methods on the knowledge and intentions of mothers in exclusive breastfeeding in the work area of the Sungai Ulin Public Health Center. The research method used was quasi- experimental design with a pretest-posttest equivalent control group design. The sample consisted of 68 respondents were selected by purposive sampling which was divided into experimental and control groups. Data collection is done by giving questionnaires to respondents. The results of this study found good knowledge in the treatment group of 91.2% and intention of 73.5% while in the good control group only 17.6% and intention was 14.7%. Kolmogorov-Smirnov test results show p-value (0.0001) <0.05 on knowledge and intention has a p-value (0.0001) <0.05 so that it can be concluded that there is a significant difference in mother's knowledge and intention after being given an intervention with a booklet media with interactive lecture methods on exclusive breastfeeding. Keywords: booklet, knowledge, intention, exclusive breastfeeding