The Excellent Enterprise's successful secret is always an important subject discussed by the enterprise operators and the managerial educational field.The scholars used to mention that the ¡§Intangible Resources " have great influence to the organization, and suggest that the characteristic of successful enterprise should contain soft variable such as culture, leadership and so on. Among them, some of the text books and publication of entrepreneur emphasized that the mission is one of the key factors for organizational management.In the past research of how mission influences organization effectiveness, researcher used interview and statistical analysis as major research methods, however, if we use System Dynamics as another approach of research method to establish the enterprise model could present the process of how mission Influence organization effectiveness more specifically. The merit of System Dynamics Model is that all of organizational issue of the management process is dynamical complexity, non-linearity, however, System Dynamics Model simulation process may help the modeler understand the relationship between system structure and behavior, and the static system feedback diagrams will become dynamical ¡§future laboratory". However, because of the soft variable lacking for specific index and method for measurement, it is still a challenge to put the soft variables in the Enterprise Model. This paper adopt System Dynamic as the research method to study how loyalty for mission of a leader in excellence enterprise influence organizational performance ¡V taking Japanese Matsushita Electricity industrial Ltd. Company as the case company to analyze how the mission loyalty affect the soft variables of organization and produce the indirect influence to the organization. By collecting researches of Excellence Enterprise and information of Matsushita Electric Ltd. Company, we constructed the Matsushita Electric Ltd. Company¡¦s System Dynamics Model, and put the soft variables in to model and run the simulation, find out the relationship between Excellence Mission and organizational performance. By discussing how the leader¡¦s Mission loyalty affects the organizational performance indirectly, we can prove that soft variables in organizational business and the System Dynamics modeling cannot be neglected.