都市計畫的過程中，最優先而迫切等待解決的課題，便是由於人口膨脹所引發的問題。十九世紀時的巴黎也出現了相同的狀況，而此種現象嚴重的影響了舊式的都市組織功能與都市的需求量與供應量。因此，巴黎亟需重建與規劃。對於十九世紀的巴黎而言，此一工作便是由喬治‧巴隆‧歐斯曼（George Baron Haussmann）所執行。本論文將針對歐斯曼的調整式都市計畫，以「交通」、「衛生」、「舒適性」與「都市美」四個主題切入作深入探討外，並對當時所主張的其他理論也作探究，了解都市化的過程中，如何在解決舊城的現代化問題時，也能保存舊城的歷史價值。

In the process of urbanization, the most preferential and imminent problem dealing with is overpopulation. This situation occurred in Paris in nineteen century. It seriously influenced the functions of existed urban organizations and impacted the capacity of needs and supplies. Therefore, the renewal and reviviscent plan was necessary for Paris. George Baron Haussmann was selected to do this work.This thesis aims directly at Haussmann's regulative urban development plan. It is explored by four subjects, which were transportation, public health, comfort and the beauty of city. Besides, other theories will be compared and discussed in details, to understand the whole picture of the challenge on solving the conflicts between modernization and preservation of historical issues.