旧城更新是20世纪中期兴起的课题。随着我国城市化进程的大大加快，旧城更新作为城市可持续发展中必然遇到的问题越来越引起人们的关注。然而我国旧城更新的现状却令人忧虑，始终存在着风貌保护与危房改造、商业开发与居民利益保护等矛盾和难题。这既有政治经济社会结构的深层次原因，也存在研究方式自身的局限和不足。旧城更新是一项涉及建筑、规划、政治、经济、文化等诸多方面的综合性课题。因此，本文将选取与以往规划技术不同的公共政策视角，关注于旧城更新政策的提出过程，试图为旧城更新的实践提供指导。 在具体研究方法和内容上，本文主要借鉴了在政策过程研究中应用较为广泛的“多源流”框架为理论工具，选取具有代表性的北京前门地区旧城更新作为研究个案，采取文献研究、问卷调查和比较研究的方式，从旧城更新所面临的困境和问题出发，通过对我国旧城更新历程的总结，按照“多源流框架”中问题源流、政策源流、政治源流的思路，对前门地区“迁而不拆”旧城更新政策的提出过程进行分析，并进行横向和纵向的政策比较研究，探讨“政策之窗”的形成过程及对旧城更新政策模式的影响。 通过运用多源流理论对前门地区旧城更新政策过程的分析，并对政策实施的效果进行简要的评估，借鉴国旧外旧城更新成功的政策模式，我们得出的结论是：政治源流在前门地区更新政策制定过程中起主导作用，重大政治事件为前门地区旧城更新打开了政策之窗，政策议程的建立来自于政治源流与问题源流合流的需要。根据对结论的分析，为进一步完善我国旧城更新政策，提出了旧城更新政策过程需要制度化、旧城更新目标需要体系化、旧城更新参与主体需要多元化的建议。

Urban renewal is an issue that rose in the middle of the 20th Century. With Chinese urbanization process expedited greatly，urban renewal attracts more and more attention as an inevitable problem in sustainable development of the cities. Nevertheless，current urban renewal of China is rather unsatisfactory，there is always the contradictions between the conservation of urban flavorful appearance and reconstruct dilapidated buildings, commercial development and the protection of the interests of residents, upon profound reason political，economic and social structures and limit and deficiency of research method. Urban renewal is an integrated policy system involved in architecture，planning， politics，economy，culture and others. Therefore, this paper will be selected in the past public policy perspective the different planning techniques, focusing on the process of bringing forward the urban renewal policy, trying to provide guidance to the practice of urban renewal. In the specific research methods and content，this paper mainly draws on “Multiple-streams Framework” for the theoretical tool which is widely used in the policy process，selects the urban renewal of Beijing Qianmen area as individual case of study，resorts to literature，surveys and comparative methods，from the view point of facing the difficulties and problems，summarizes the history of Chinese urban renewal，to analyze the policy process of Qianmen area renewal by theoretical tool Multiple-stream Framework and according to problem stream， policy stream and political stream，exploring the formation of Policy Window，and the impact on the policy model of urban renewal. After the analysis about the urban renewal policy process of Qianmen area is made through the application of the Multiple-stream Framework, assesses the effect of policy implementation，refers to successful foreign urban renewal modes，we draw the conclusion that the political stream plays the dominant role in the process of formulating the urban renewal policy of Qianmen area. Key political events open the Policy Window, and the establishment of policy agenda originates from the demand that political stream and issue stream shall flow together. According to the analytical conclusions, the suggestion that the formulation process of the urban renewal policy requires to be institutionalized, systematized, and involved with participation of the public is proposed in terms of further making the urban renewal policy of China.