The modernization of the county is and will be the key point of China. And the research of the modernization of the county has aroused the concern of the leaders and the researchers. Taicang city is an important part of the South of Jiangsu Province，so it is vital to make some research on its 30 years modernization development. Since the reform and open policy，Taicang pattern has completed “three big spans” and formed the modernization road of Taicang with “the Southern Jiangsu pattern and the Taicang characteristics”. Taicang pattern has conformed to the laws of scientific development. Taicang pattern has completed the “five transformations” so that it enriches the modernization connotation of the Southern Jiangsu pattern.