The main purpose of the present research is aimed at investigating the effect of team cohesion and self-confidence after being experienced adventure sports. The subject of the research were the junior high school students who joined the unicycle club or unicycle school team. The research uses the questionnaire survey procedure, recycling effective questionnaire 300, and the questionnaire information has analyzed with Structural Equation Models. The result was that: first, adventure sports influenced team cohesion positively. Second, adventure sports influenced self-confidence positively. Third, team cohesion influenced self-confidence positively. Based on the finding, this research suggests that government should diffusion unicycle in junior high school and take unicycle as a compulsory course in physical education and then teachers can increase class cohesion and students' confidence through practicing unicycles.