The metropolis economic circle which regards Shanghai as the dragon head,the south of Jiangsu and the north of Zhejiang as two wings,which includes fifteen cities bigger than prefecture cities in Shanghai,Jiangsu and Zhejiang,is becoming the engine of economic development of China.Thus,deep analysis of the economic development situation of the dragon head of Yangtze River delta metropolis economic circle and correct understanding of the regional economic development situation in Yangtze River delta play the instructive role in making scientific economic development strategies and countermeasures for the related provinces and municipality.