The aim of this study was study the relationship between life satisfaction, positive youth development and parent- adolescent conflict with Behavioral problems in adolescents. This research method is correlation and stepwise regression type. The target population included all high school students in Tehran in the academic year 1395. 700 patients were selected with cluster sampling. The instruments used in this study are multidimensional students’ Life Satisfaction Scale (MSLSS), Youth Self-report Scale (YSR), Positive Youth Development (PYD), and Parent-Youth conflict Scale. The results showed between life satisfaction and positive development of youth with behavioral problems, there is a negative relationship. While between parent-adolescent conflicts and adolescent behavioral problems, there is a positive relationship. Stepwise regression analysis showed that the predictor variables together explained 29% of variance adjusted for behavioral problems. So to the extent that Adolescent level of life satisfaction, positive youth development program to be implemented and parent-adolescent conflict is reduced, also reduced behavioral problems in adolescents.