Introduction: This study aimed to investigate the efficacy of parent-child conflict and self-concepts of reality therapy on male adolescent in Ilam.

Materials & methods: This study employed an experimental research plan with pre- test and post-test with control group and random assignment. The population of this study consisted of male adolescents in Ilam and statistical sample was first grade students in 2014 of Shahriari and Motahari high school in Ilam, among which 30 individuals were randomly assigned in both intervention and control groups. To measure the dependent variable parent-child conflict and self-efficacy questionnaire was used.

Findings: Multivariate analysis of covariance showed that in the post test scores of parent-child conflict in the subjects of experimental group was significantly reduced compared to the control group.

Discussion & Conclusions: According to the obtained results it can be said that teaching concepts of reality therapy program reduces parent-child conflicts and increases self-efficacy in male children and adolescents and therefore it is suggested that this program be used to reduce parent-child conflicts and increase self-efficacy of male children and adolescents in educational, psychological and nurturing levels besides other programs.