本文研究了纯交换经济的系统经济效应,主要包括两个方面的内容:一是交换前后资源位的变化;二是至少一样好解集的变化,这既可以理解为自由度的增加,也可以理解为福利水平的改进。对纯交换经济的系统经济效应研究是研究一般均衡系统经济效应的基础。 This paper studies the economic effects of pure exchange economy, including two aspects: one is the change of resource bits before and after the exchange; the other is the change of at least one good solution set, which can not only be understood as the increase of the degree of freedom, Understand the improvement of the level of welfare. The study on the economic effects of pure exchange economy is the basis for studying the economic effects of the general equilibrium economy.