The principal theme of this diploma thesis is the long-term soccer development and its decisive influencing factors on youth soccer players. In the beginning there is a short description about the history of soccer, which should help the reader to get into the topic.The first main chapter provides important information about youth soccer and its most important characteristics like: periods of long-term development in sports, requirements in (youth-) soccer, special stages of development during childhood and youth, social importance of/in sports and further challenges of soccer.The second main section describes the different soccer development concepts of the following four countries: Austria, Germany, the Netherlands and the United States. It's main aim is, to provide information about the different philosophies and their development stages regarding technical, tactical, physical and psycho-social skills. Additionally the author likes to compare different kinds of match types and to illustrate the cooperation between the federations, clubs and schools in the countries mentioned above.As assumed, more similarities are shown between Austria and Germany due to their soccer development concepts than within other constellations. Furthermore, this thesis confirmed, that technical, tactical and physical elements are better and more transparent presented, than psychological and social factors.