本文应用分形理论，对太原市城市形态近40年的动态变化进行了尝试性的定量分析，揭示了太原市在不同历史时期的城市地域扩展方式，结果显示：太原市城市形态的演变与工业化发展阶段及社会发展的周期性密切相关，城市的形态随城市经济的周期性波动而变化。

The change of urban structure is one of the important features about urbanization. Based on 4 fluctuation stages of urban maps of Taiyuan city, a primary study has been made by applying the Fractal theory. The result shows that the process of urbanization from 1949 to 1989is divided 4 stages: (1)quicker extension period; (2)quicker and non -stable extension period;  (3)slower extension period; (4)stable extension period.