The purposes of this study was to explore and describe the two power to control the sports team to lift up or sink down, that were team cohesion and social loafing. Team cohesion was to agglomerate everyone to achieve goal, and social loafing was to slack off and unwilling to pay in work. The method was used interviews, inductive to collect date and literature. That was to explore how to effect of team cohesion and social loafing on sports team, which had the interference factors or mediator factors. Finally, that was to know how could be 1 + 1 > 2.