The problems of scenario modeling of development of socio-economic systems are analyzed. The essence, trends and peculiarities of the use of scenario approach have been determined. The differences between scenario approach to modeling and forecasting and traditional methods of strategic planning have been analyzed, the dominant availability of scenario approach to the solution of the problems of regional development has been proved. The types of scenarios and methods of its creating including the mathematical methods of creating of scenarios of development of socio-economic systems have been considered. The mechanisms of realization of scenario modeling have been analyzed and the formal description of the problem of scenario research has been given. 

scenario, modeling, region, strategy