This study is to discuss the value of enterprise and the strategy formulated by system dynamics. For this field we trial to research the key activity factors that will effect the value of enterprise. This study will design a model and simulate the behavior of the key activity factors when the leader decided and executed the policy. From this model, the leader will anticipative understand the changes of the value of enterprise, know well the causal relationship and the feedback on the activities before decide, in addition become the strategy thinking, prevent the mistake and for the reference in management at the same time. The conclusions of this study are presented as follows: 1. From the thinking of strategic with the system dynamics, we build up 9 systems to simulate the operation of the enterprise and study the relationships with the variables are named Leader-Ship, Culture, Market, List, Technology, Stock, Operation Cost, Brand Value and Sum-profit. 2. From simulation, the logic design of the whole system and the relationships of the variables had been proved, that means it is the interdependence among the strategy, the capability of the management, and the value of the enterprise. 3. Compared with the simulating result and the strategies, the policies and the performance for 4 years in the case, there is a valid verification to pre-simulate and forecast the effects and the changes on the value of the enterprise before decided. The conclusions above are significant to the ¡§carrying capacity¡¨ of the corporate value that reflects to management in the following aspects. 1. Differentiation is the leader-ship and the managerial capacity. 2. Are the strategies making competitive advantage¡H 3. How about the resistance when the enterprise has been attacked by the competitors¡H