The key to future urban development is the scientific development of regional central cities. Nanchang is one of the regional central cities in central China. Its basis is relatively weak and there is no special advantage. But in recent years，Nanchang has been showing a rising trend and has realized a good and fast development through the construction and practices of the scientific concept of development，which is called “Nanchang Phenomenon”. Nanchang insists in the guidance of scientific concept of development in these years. Modern manufacturing industry is its pillar，green development is its principle，urban expansion is its leverage，and to benefit the public is its goal. And now it has formed a good and fast development model. In this model，government regulation and control is in accordance with the law，the market is orderly operated，and citizens show active participation. The scientific concept of development is Nanchang’s world outlook and methodology to guide its urban development. It is a concrete practising model which has vividly reflected the demands of scientific concept of development. And it has put forward important inspiration in the methodology，system theory and controlling theory.