本文着眼于京津冀协同发展与北京非首都功能疏解背景下，首都北京的城市建设，并通过借鉴东京都市圈的建设经验对其做出政策方面的分析研究。首先从北京首都定位与规划、京津冀发展规划和雄安新区政策规划这三大方面，纵向与横向，全面梳理了北京城市建设的全景。其次以21世纪为分界线，从上世纪的建设经验与21世纪的难题与解决方案两个部分，分析和梳理了东京都市圈的建设发展。最后通过对比北京与东京的异同点，借鉴东京都市圈经验教训，提出对当下北京城市建设的三点建议。一是借鉴其“多心多核”的区域规划结构；二是借鉴其“对流”理论，注重首都与周边、区域与区域之间的双向互动；三是提高地区的自主性，将政府与市场的作用相结合。

This paper aims to make the policy analyses of the capital Beijing’s construction in the context of the coordinated development of Beijing-Tianjin-Hebei region and non-capital functions’ phasing out. Firstly, the dissertation begins with the analyses of Beijing policy planning, Beijing-Tianjin-Hebei development planning and the policy planning of Xiong’an new district. Based on the research on the three above aspects, the panorama of Beijing's urban construction will be comprehensively analyzed vertically and horizontally. Secondly, the construction of Tokyo metropolitan circle will be analyzed chronologically from its construction experience in the 20th century and the problems and solutions in the 21st century. Finally, by comparing the similarities and differences between Beijing and Tokyo and drawing lessons from Tokyo metropolitan circle’s construction experience, this paper will put forward three suggestions for the construction of Beijing. First is to learn from its "multi-core" regional planning structure. Second is to pay attention to the two-way interaction between the capital and the surrounding areas and region. Third is to improve the autonomy of the region and combine the function of government and market.