From the actual conditions of Hunan and Jiangxi, based on the city symmetry theory of academician Ye Danian, combined with the universal and complementary of Xiang-Gan District economic development, one New Mode of Xiang-Gan District economic cooperative development especially City-city cooperation which was announced. After analysis, this new mode can be easily found which can give full play to regional advantage; realize the complementary advantages from resources, information and technology of two provinces. And this new mode can also be easily found which can improve the competitiveness of...