现代企业将不再只是一个单一结构的经济组织，而是多个单位的经济联合体，其中最典型的组织方式就是企业集团。在企业集团组织结构里，企业由原来的单一的法人组织变为多个法人的联合体。之所以实现这样的组织形式，是由于市场与企业之间的替代机制以及由此而带来的交易内部效 Modern enterprises will no longer be just a single structure of economic organizations, but the economic union of many units, of which the most typical organization is the business group. In the organizational structure of the enterprise group, the enterprise is changed from a single legal person organization to a coalition of multiple legal persons. The reason why such an organizational form is achieved is due to the substitution mechanism between the market and the enterprise and the consequent internal effects of the transaction