The level of informatics development is causally linked to the level of scientific development in the area. Successful scientific work is based not only on the investigative style of thinking, but it also means to think in context and to see the whole setting of the solved research problem – to be able to apply system approaches. System approaches include System Dynamics; a community practicing system dynamics has become the strongest school of system approach with many members of the academic environment as well as from real life practice. The aim of the article is to show the possibilities of system dynamics models as appropriate tools to support system approach to scientific research in informatics. The multidisciplinary and quantitative concepts that are typical of System Dynamics are, according to the authors, suitable for systemic solution of the complex problems of current IT practice. Conducted research and examining the principles of system dynamics including the stages of creation of its models confirm these author's arguments.