The purpose of this study is to present policy implications for the efficiency of child-friendly city creation through an empirical analysis of the relationship between variables related to the effectiveness of child-friendly city creation and the creation of child-friendly city. For this purpose, the difference between before and after the certification of child-friendly cities was analyzed for children of local governments certified as child-friendly cities. According to the analysis, the factors in the six major areas of child-friendly city creation do not significantly affect children's regional satisfaction, living satisfaction, and happiness. Based on these analysis results, the necessity of creating a child-friendly city and the direction related to the creation of a child-friendly city were presented. We also present the limitations of our research and future research challenges.