元朝时期中国版图空前辽阔,“北逾阴山,西极流沙,东尽辽左,南越海表”。成吉思汗及其后继者先后统一蒙古各部,继而东征西讨,通过金戈铁马的赫赫武功,纵横驰骋于欧亚大陆,建立起西抵黑海,几乎包括整个东亚地区的世界性帝国。忽必烈建立的元朝是中国历史上第一个由少数民族统一的王朝,初步奠定了中国疆域的规模。但是,如何统治这样一个疆域辽阔、民族众多的世界帝国,这是蒙元统治者长期以来面临的政治困境和必须要解决的统治难题。蒙古统治者从中央到地方的一套完整的符牌制 The unprecedented territory of the Yuan Dynasty in China, “North over the Yinshan, the West anomalies, East Liao left, South Vietnam Sea ”. Genghis Khan and his successors unified the Mongolian ministries and commissions successively, and then went eastward and west to discuss the issue. Through the outstanding military exploits of the Mongols, they flew across the Eurasian continent and established a worldwide empire that crossed the Black Sea to the west and included almost the entire East Asian region. The Yuan Dynasty founded by Kublai Khan was the first dynasty to be unified by ethnic minorities in Chinese history and initially laid down the scale of China’s territory. However, how to rule such a vast territory and numerous national empire is a political dilemma that the Mongol rulers have long faced and the dilemma that must be solved. The Mongol ruler from the central to a complete set of brand system