中文摘要：

中国城市建设已经进入一个以快速发展与结构性调整并行互动为特征的城市化中后期阶段。城市社会经济已进入产业布局、类型、结构的重构和转型的实质性实施阶段，如何在新的发展条件下进行城市中心的功能与结构调整成为当前中国城市发展的重要主题。以常州旧城中心区为例，就中心地区功能转型、土地资源再生和旧城整体机能提升等问题展开讨论。

英文摘要：

China＇s urban development has entered a later stage characterized by a rapid paceand structural adjustment.In this stage, how to optimize the function and structure of city center has become amajor theme of urban development in China. Changzhou city, as a central city in Yangtze River Delta, has a concentration of urban central＇ functions in the old city. In recent years, due to lack of comprehensive and effective policy guidance, problems like traffic congestion, environmental degradation, cityscape homogenization and so on have become increasingly serious. The paper discussesissues related to functional transformation, physical improvement of city center, reuse of land and so on.