The current study was compiled with the aim of investigating the relationship between leisure time physical activity and high-risk behaviors and self-efficacy of adolescents in Noor city. Descriptive-correlation research method is survey type in terms of implementation, cross-sectional in terms of time, field in terms of data collection, practical in terms of purpose, and prospective in terms of results. The statistical population of the present study was made up of all male teenagers in the second half of high school (13-18 years old) of Noor city, taking into account the error level of 5 355 people were randomly selected by simple cluster-class method. Ahmadpour's standard prevalence of risky behaviors questionnaire (2013), self-efficacy of children and adolescents (SEQ-C) by Morris (2001) and Farat Godin and Shepherd's (1985) time physical activity questionnaire were used to collect data. To analyze the data, Pearson's correlation coefficient test and linear regression were used using SPSS software. Based on the results, it can be seen that there is a significant relationship between leisure time physical activities with high-risk behaviors of teenagers (P < 0.05 and r = -0.03) and leisure time physical activities with self-efficacy of teenagers (P < 0.05 and r = 0.02). It did not exist, and there is a significant positive and moderate relationship between self-efficacy and high-risk behaviors of teenagers in Noor city (P<0.01 and r=0.33). Finally, it is suggested that active sports and education teachers in schools take moral and social issues together with the sports activities of teenagers.