Based on the summarizing the study of the economic regionalization, the regional divergence, development models, industry structure, development strategies, regional co-development, the economic and technical development zone, space framing, foreign direct investment, the regional coordination policy, the regional culture, the relationship between Jiangsu and Shanghai, this paper points out that the frontiers of regional economic study of Jiangsu today are the construction of the international industry, the study of the economic integration, the planning of the regional development and the establishment of the regional agency, new industry area, the orders of the regional space, regional environment innovation, the new regional pattern, the economic co-development of Jiangsu and the middle and western regions of the country and so on