Since reform and opening-up，the development of regional economy in China has realized the transformation from low-level coordinated development to uncoordinated regional development. Remarkable achievements have been made and economic cores and growth poles were thus established，contributing to the high-speed growth of national economy and promoting the economic strength of the country. But errors and problems also exist. In this new century，the strategic idea of promoting the coordinated economic development among regions has been established，the strategy of the large-scale development of the western region，rejuvenating northeast China and other old industrial bases in an all-round way，boosting the development of the central region and supporting the eastern region in taking the lead in development has been implementing. Thus，China has entered a new stage of coordinated economic development among regions.