一、引言唐宋以来的城市多为古今重叠型,形制及布局受前代基础影响很大,不易作出全局性的变动~([1])。而各时期新创建的城市则少受成规羁绊,往往可以体现新的规划思想与时代特征。因此,从分析这些新创建的城市人手,就成为研究古代城市规划变迁的有效途径。蒙元时期新创建的城市主要分布于中国北方地区及蒙古、俄罗斯境内,大多早年 I. INTRODUCTION Since Tang and Song dynasties, cities since the Tang and Song dynasties were mostly ancient and modern overlapping types. Their shape and layout are greatly influenced by the foundation of their predecessors and are not easy to make global changes. ([1]). The newly created cities in each period are less subject to rules and fetters, and can often reflect new planning ideas and characteristics of the times. Therefore, analyzing these newly created urban manpower has become an effective way to study the changes of ancient urban planning. The newly created cities during the Mongolian Yuan Dynasty were mainly distributed in northern China and Mongolia and Russia, mostly in their early years