In this paper we analyze the modern world tendencies in theoretical and empirical studies of the risk factors for suicidal behavior among adolescents and youth. Developing a model of suicide risk among adolescents considering the inner and external factors determinating suicidal risk, we conducted an empirical research. 276 pupils (151 male и 125 female) were assessed on a number of measures such as The hopelessness scale for children, Beck Depression Inventory (BDI), The Reasons for Living Inventory», Zung Self-Rating Depression Scale) Nemchin's Questionnaire, Kulikov's Questionnaire, Amirkchan's Questionnaire, Orel's Questionnaire to obtain inner risks and our specially developed measure: Hopeless Situation Inventory to find situational external risks. In our model we consider inner determinants of suicidal risk to be hierarchic and on the first level to be united into three components: Emotional and regulative component, Cognitive and evaluation component and Behavioral component. Our fussy model of suicide risk also considers external determinants to be the triggers of suicide attempt when inner risk is high. Using our model we could predict the risk of suicidal behaviour among our adolescents' sample.