Elementary school students are a group with a high risk of dental caries, so their selection as a target for health promotion is very appropriate. This research aims to develop accessible, cheap, and effective health promotion media. Health promotion media developed are audiovisual and leaflets. The research method is a quasi-experimental (quasi- experimental) design with a pre-test – post-test group design. The population in this study was all students of Beureunun State Elementary School I and all of Beureunun State Elementary School 3, Pidie Regency. The sample in the study amounted to 100 students. Data analysis used univariate and bivariate. The study's results found a difference in the mean knowledge score in post-test I and post-test II between the audiovisual media group and the leaflet media group. The audiovisual media group was higher than the leaflet statistically at the significance level of p = 0.000. In the attitude aspect, there is a difference in the mean attitude score in post-test I and post-test II; audiovisual media showed an increase in the mean score of attitudes which was higher than the leaflet group, which was proven statistically at a significant level of p = 0.000. There is a difference in the mean behavioral score in post-test I and post-test II between the audiovisual media group and the leaflet media group, the mean behavior score in the audiovisual media group are higher than the leaflet at a significance level of p = 0.000.