The current study aims at investigating the mixed effect of family and neighborhood contexts on juveniles’ violence in South Korea. By addressing four different theoretical frames, the current study assumes that family and neighborhood are directly or indirectly influencing juveniles’ delinquency. The target of analysis is respondents of Korean Youth Panel Survey (KYPS)(N=2,248). By using Stata 14, the current study conducted multi-level regression. The current study suggests several meaningful findings as follow: 1) positive family (i.e. parental attachment and parental supervision) and neighborhood (i.e. collective efficacy) contexts directly reduce juvenile’s violence, 2) negative family aspects (i.e. family conflict and emotional strain by family) directly increase juvenile’s violence, 3) negative neighborhood contexts do not necessarily lead to juveniles’ violence, and 4) family contexts mediate the relationship between neighborhood environments and juveniles’ violence. Based on the finding, the current study explains South Korean cultural background, which contributed to the unique findings. In addition, policy implication is also addressed.