The purpose of this study was to analyze the predictors of students depress, Interaction anxiety, school adjustment on cellular phone addiction of teenagers. The subjects for this study were 613 teenagers composed of 249 middle school students, 337 high school students in Daejeon. The data was conducted by using a correlations coefficient and the multiple regression analysis. According to the analysis result, correlations among measured variables of students depress, interaction anxiety, school adjustment, cellular phone addiction were significant. Secondly, the multiple regression analysis result showed that students depress, peer relations, and interaction anxiety variables to most greatly explain cellular phone addiction. These results indicate that cellular phone addiction related to depress, interaction anxiety of teenagers.