伴随中国经济高速增长的是城乡收入差距的不断扩大，制度是其重要根源。在公平与效率的目标下构建Logistics制度系统演化模型，城乡收入差距和人均GDP数据分别代表公平与效率，对所构建模型进行拟合，验证了公平与效率的交叉影响。利用1983-1997年和1997-2009年数据分别进行拟合，通过对比两个时间段制度系统参数和均衡点的估计值，发现前一个时期的制度系统要优于后一个。所以，缩小城乡收入差距的制度改革如果能够对制度系统均衡点作出调整，就更加合理。%With China's rapid economic growth ,urban-rural income gap is increasing ,which reason has been ascribed to institution .According to Logistics model ,the evolutional model of institutional system was constructed under the goal of fairness and efficiency .Urban-rural income gap stands for fairness and per capital GDP stands for efficiency ,then that model could be fit .The result could test that there were cross-impacts between fairness and efficiency which were considered in that model .All data can be divided into two stages :1983-1997 and 1997-2009 .After the fitting using the data in 2 stages ,the parameters and the equilibrium positions of 2 institutional systems in 2 stages can be acquired .By comparison ,the former was better than the latter .Therefore the institutional reform to narrow the urban-rural income gap should be the rationally readjusting for the parameters and the equilibrium position of institutional system .
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