This paper examines the relationship between the environmental factors of peer pressure and family smoking (parents’ smoking and siblings’ smoking), and adolescent cigarette smoking habits in Kerman (as a big province in Iran). In addition, in terms of the afore-mentioned behavior, the moderating role of self-efficacy on the link of peer pressure and family smoking is studied. A quantitative research method was used for this purpose. The sample included 300 adolescents between the ages of 15 and 18 as current smokers. Self-administered questionnaires were used to collect the data which were then analyzed using AMOS Software and running Structural Equation Modeling (SEM).

The results showed positive significant relationship between peer pressure plus family smoking (parents’ smoking and siblings’ smoking), and adolescent cigarette smoking. The relevant findings and results revealed that self-efficacy has a considerable moderating effect on the relationship between cigarette smoking behavior, and peer pressure and family smoking. The results of the present study can contribute to the literature and have significant implications for practitioners and policy makers to prevent adolescents in Iran from developing smoking habits. olescents from exhibiting cigarette smoking behaviour amongst youngsters.