This study was performed in order to verify the effect of family resilience in youth suicide. The subject was the third year of high school boys in Gwang-ju, 308 questionnaires were used in the analysis. In order to derive the results of a study, we used the statistical processing technique SPSS, to perform verification of factor analysis and reliability of each variable, AMOS analysis was performed for hypothesis testing. According to the result of the study, belief systems which was sub-variables of family resiliency affect communication, and communication influence on the idea of adolescents suicide. In addition, the belief system has an indirect impact on the communication mediated suicidal thought. Thus, If we emphasize the harmony between family, suicidal thought of adolescent will be reduced. So we proposed the way to increase the belief of the family, and ways to improve communication between parents and children.