The pattern-eating snack at schoolchild habit needed specially attention for his parent's or teacher's. This habit is not good enough for nutrient and hygiene. A food or a drink contains sucrose more like by schoolchild. The purpose of this study is to know the correlation of Eating snack at schoolchild habit and caries of five elementary school students in Kabupaten Jember. Method cross sectional was use in this study, and sample was taken by Stratified Random Sampling. Material and tools uses in this study are mouth glass, sonde, pincer, probe periodontal, sterile cotton, and alcohol 70%. The respondents examined and write DMF-t status, and they answered the questioner for to known eating snack at schoolchild habit. The result data was test by Analyst Of Variance (ANOVA), and indicated that there is correlation between eating snack at schoolchild habit and caries (p<0.01).