Audiovisual socialization is very influential in increasing the knowledge of mothers about exclusive breastfeeding. The problem in this study was 15 babies who failed to get exclusive breastfeeding. The purpose of this study was to assess whether audio-visual socialization was appropriate in increasing maternal knowledge about the importance of exclusive breastfeeding for mothers who have babies in Samatiga District, West Aceh Regency. This research is a quasi-experimental pretest-posttest design with a control group, data analysis using a paired t-test with a sample size of 15 mothers. The results of the t-test before the socialization obtained a mean value of 1.26 and after the socialization, the mean value was 1.86 with a t value of -4.583 with a P-value of 0.000 <α 0.05. After being reviewed, this audio-visual socialization is feasible in increasing the knowledge of mothers about exclusive breastfeeding. Suggestions from related parties to routinely socialize exclusive breastfeeding to mothers through Audio Visual