Abstract : Non-Communicable Diseases (NCDs) are the leading cause of death for 36 million (63%) of all deaths worldwide. About 29 million (80%) occur in developing countries. The increasing prevalence of Non-Communicable Diseases cannot be separated from the risk factors that are not avoided by the Indonesian people which began to occur during adolescence. Jika teenagers never do physical activity and regulate diet, they will be at risk of developing Non-Communicable Diseases such as Obesity and diabetes mellitus. The purpose of this study was to identify behavioral factors to prevent the risk of non-communicable diseases of DKI Jakarta High School students. The type of quantitative research used is using a quasi-experimental method with a non-equivalent control group pretest and posttest design. The total sample of 220 students in four DKI Jakarta schools. Sampling carried out by Purposive Sampling. The test used is chi Square with univariate, bivariate and multivariate data analysis. The intervention carried out by providing modules and Application, School-based PTM Posbindu can improve Student PTM Risk Prevention Behavior. School-based PTM Posbindu Application improves Student Non-Communicable Disease Risk Prevention Behavior. Dietary attitudes, physical activity attitudes and student self-efficacy influence the prevention behavior of the risk of Non-Communicable Diseases. The most dominant variable influencing Non-Communicable Disease risk prevention behavior is the student's dietary attitude. It is necessary to further develop the Posbindu model that already exists in the school setting to improve the Risk Prevention Behavior of PTM student.