The Regional Economic Difference of Jiangsu Based on The Purchasing Power Parity
用购买力平价理论分析江苏各区域的经济差异，发现实际经济差异缓慢上升，差异主要体现在苏南、苏中、苏北三大区域之间。
This paper researched the purchasing power parity between the regions of Jiangsu with the theory of purchasing power parity. In this paper, the gini coefficient, Mann Kendall method and clustering method were used to make a systematic analysis of the change and structure ofnominalandrealregional economic inequality, and the results are as follows:(1) Therealeconomic differences of Jiangsu is slowly rising by the purchasing power parity method;(2)According to the purchasing power parity between regions, the change of the regional economic inequality of Jiangsu can be divided into four stages:1985-1992, 1993-2000, 2001-2008 and 2009-2012;(3) The regional purchasing power parity won't change the form of regional inequality, and the regionalinequality of cities in Jiangsu mainly shows up as the differences among the three zones;(4) The purchasing power parity has a significant influence on the economic development measure of the relatively developed areas.