The aim of this study is to investigate the effect of family functioning on Vandalistic behavior among high school students in Javanrood city, Kermanshah province. Various perspectives about deviant behavior, vandalism and family functioning scales are reviewed and the MC Master Model is used to building the theoretical framework and hypotheses. Research method adopted is correlation analysis and survey. Participants are 357 high school students in Javanrood city. Data is analyzed by the SPSS software. The findings show that there is a statistical significant negative relationship between the three dimensions of family functioning (family roles, problem solving, and expressing emotional feelings) and the level of vandalistic behavior in high school students. According to multiple regression  analysis, problem solving with -0/737Beta, emotional express with -0/692 Beta, family roles with -0/069Beta are important predictors respectively. The most important predictor of vandalistic behavior was problem solving in family.