Abstract: As the world’s largest developing country, China’s economic growth is particularly urgent and important and the problem of regional development gap it has to face is much more serious. The differences are not only exist in China’s three belts of eastern, central and western but also in some provinces and the research on regional economic gap within some provinces is a key point for its significance. Therefore it is urgent to do the careful analysis and research on the problem and draw the corresponding solution and countermeasures. Jiangsu province is the developed area of China’s eastern coastal economy. And its regional economic differences have certain development track and influence factors, including three aspects of resources possession, opening up, the development strategy. As the existence of problem of regional economic development in Jiangsu province, the basic thought of coordinated development should be further improved and at the same the specific paths of implementing coordinated development of regional economy in Jiangsu need to be sought.