中文摘要：

选用泰尔指数与nich指数,通过ESDA分析探索新世纪以来江苏沿海乡镇经济格局演变。江苏沿海低于平均水平的乡镇占多数,经济发展水平差异持续扩大。低水平乡镇分布在废黄河以北,高水平乡镇集中于南通市,沿海乡镇经济格局日趋呈现＂东南——西北＂递减的梯度格局。高增长乡镇集中于南通市域,低增长乡镇集聚于废黄河以北乡镇。增长热点集中于临市区、临港、临高速节点及沿江地区。废黄河北部乡镇集聚性的增长滞后。沿海乡镇经济格局演化驱动因素包括：区域宏观政策导向、区位因素与投资规模。

英文摘要：

This article takes towns as study unit and applies spatial analysis of ESDA,Nich Index and Theil Index toward towns economic spatial differences and driving force in Jiangsu Coastal Region.The results indicate： the towns which were lower than average level account for majority.The economic differences shows expanding situation.Low-economic level towns tend to lie in North of Waste Yellow River.The overall pattern of economic space shows diminishing situation from south-east to north-west.Growth hotspot tend to lie nearby downtown,port,high-speed nodes and along the Yangtze River.The driver factors include regional macropolicy orientation,location and scale of investment.