Smoking behavior in adolescents is caused by one of the environmental factors (external) including family or parents, siblings or peers who smoke and advertise cigarettes in the mass media.(1,2) The prevalence of active smokers for boys aged 10-14 years was 3.7% in 2013 or increased 12 times compared to 1995.(3) The purpose of this study is to look at the effect of the environment on students' resistance to not smoking. This study used quantitative research with cross sectional study design. Held in public high schools in the city of Padang.Method Multistage random sampling for selecting high schools (5 selected high schools), the sample size used the formula survival study, with 220 students.4 Data were collected using a valid and reliable questionnaire, the data were processed, and analyzed by survival analysis.(4,5) The results of the study show that the proportion of adolescent endurance to not smoking until the age of 19 is 41%, the youngest age to ever smoke is 7 years and the oldest age is 19 years, Parental behavior is a factor that is highly correlated with adolescent endurance not to smoke. It is recommended that relevant officials conduct health education in accordance with the phases of development of children and adolescents. Conduct health education in an informal environment and break the chain of distribution of cigarettes.