The emergence of society at risk represents a stage in the development of modern society, in which the political, social, ecological and individual dangers that arise with the process of innovation constantly escape the protective and controlling institutions of the industrial society. Our country has always been exposed to many different dangers. In this study, we seek to study the factors affecting the perception and understanding of the risk among younger generation in Tehran. The statistical population of this research includes all young people in Tehran. The research method of this paper is quantitative method with survey technique and questionnaire tool. The sample size was 384 people. Findings of the research show that the most important risks from the perspective of young people are political-economic risks, then health-environmental, security-security and, finally, socio-cultural risks. The correlation test shows that between the trust in the future and all the components of risk, the variable of lifestyle and the components of the risk of political-economic, industrial-technological and socio-cultural risks, the variable of knowledge with the political-economic, health-environmental components And socio-cultural and variables of religiosity with political-economic, security-law, industrial-technological and socio-cultural risks. the results of regression analysis show that 38% of the changes in the dependent variable of risk can be explained by independent variables. Regression coefficients show that the confidence variable in the future has the greatest impact on the risk variable. After that, the knowledge variable, then the risky life style, and, the religiosity variable, have the most impact on the risk.