摘要:Teenager’s physical health is the foundation that ensures teenager overall development, and meanwhile it also is the top priority that has a relevance to future of state. In contemporary China, people from different cities and different regions have different understanding degrees about teenager’s sports so that has an effect on teenager’s physical health and sports behaviour. The paper starts with medium’s impacts on teenager’s physical health and sports behaviour these two aspects, through statistical analysis and correlation analysis methods, it studies relationships between medium and teenager’s physical health as well as the medium’s functions in teenager’s sports behaviour. Firstly, it analyzes medium’s liability and its functioning of propaganda in teenager’s physical health, secondly, on this basis, it carries on analysis of teenager’s contacting with different mediums sports consulting degrees, time and gender difference, and then further studies medium’s impacts on teenager’s sports behaviour. Finally it gets conclusions that television network, broadcast is one kind of mediums that most widely used by contemporary teenagers to get sports information, and duration is basically around 30minutes. Contemporary group of teenagers’ enthusiasm in participating in sports activities are not so high and gender difference is obvious, their attentions to sports information are mainly sports news.