Now with the refined food diversification of Taiwan, people generally eat a lot to balance the mind and pressure. The misconceptions is deeply lurking in the young people's cognition, accompanied with fatness, diseases and social problems. The purposes of this study were to analyze the relationships among sports participation, self -efficacy and learning effects, The subjects were the teenagers in Taoyuan County junior high schools and the investigation was based on questionnaire survey. Research tools were sport participation motivation scale, self -efficacy scale, and learning effects scale. 400 questionnaires were distributed and 394 valid questionnaires retrieved. The valid response rate is 98.5%.Reliability analysis, item analysis, descriptive statistics and structure equation model IBM SPSS Amos 20 were used to analyze the data. The results showed that: 1. There is a significant positive relationship between sports participation and self-efficacy: The higher the degree of sports participation, and also said to strengthen Teenagers self-efficacy, Teenagers sports have a healthy concept, but the lack of mobility. 2. There is a significant positive relationship between self-efficacy and learning effects: Teenagers are full of confidence and ability, but are poor at emotional control. 3. There is a significant positive relationship between sports participation and learning effects: Teenagers focus on human relations neglect learning process and the importance of studies. 4. Generally ,teenagers sleep insufficiency. 5. 89.6% teenagers have not reached the 210 happy scheme of Ministry of education yet. In the program, students have to exercise seven times a week. According to the study, the education units of County government can increase physical education curricula and promote healthy sports. That will enhance physical fitness, and we hope that can be the consult of the education units of Taoyuan County Government.