The aim of this study was to analyze the factors that were associated to the approval for the community water fluoridation program. The subjects of this study were 751 mothers of elementary school student from September 1 to 30, 2012. Data were analyzed with chi-square, and multiple logistic regression analysis SPSS 12.0. Respondents approving and opposing for the implementation of water fluoridation program were 50.3% and 10.4%. The most associated factors of approval for the community water fluoridation program was recognition of water fluoridation program (odds ratio [OR], 2.98; 95% confidence interval [CI], 1.14∼7.76), which was followed by length of residence (OR, 2.49; 95% CI, 1.39∼4.47), and recognition of sealant (OR, 1.88; 95% CI, 1.02∼3.50) in the order. And the approval opinion had relationship with district of residence. It is recommend that construction of public service system on education and information in order to most peoples can confidence the necessity of community water fluoridation program.