As an enterprise start to grow up, it comes along with the bottleneck and limitation of growth. In the meantime, this enterprise will activate a series of activities of organizational development for creating a better performance. In the past studies, researchers focused most of time on the relationship among organizational structures, those activities and organizational performance. They tried to find out how the organizational change created the marvelous performance, but just missed an important factor that made this happen is the believes of the leader. We believe that leader¡¦s believies will influence the organizational structure and then decide the performance of this organization. Our research focused on how believes affect the organization, and took GE company for example. We tried to explore the changes of organizational structure and organizational performance. Furthermore, to find out the key soft variables that is behind the back of organization¡¦s excellent performance. Our research adopted System Dynamics as the research method. We collected the information about the GE company, analyzed them and constructed the GE¡¦s system dynamics model. According to this model, we do the sumilation, test and analysis. Finally, we proposed our research conclusion.