两汉时期的西域主要由匈奴势力控制,魏晋以后,匈奴的势力开始衰落并逐渐退出北方草原政治舞台,而原本政权分散、城郭林立的绿洲地区,也随着政治、经济、文化日益频繁的交流而发生了政治格局的变化,实力较强的国家兼并弱小的国家,形成了几个主要的政权,如塔里木盆地的鄯善、于阗、龟兹、车师后部及以后的高昌等国。这一政治格局在此后相当长的一段时间里没有发生什么太大的变化。稳定的政治格局使得这一时期的西域 After the Wei and Jin Dynasties, the forces of the Huns began to decline and gradually withdraw from the political arena of the northern grasslands. However, with the scattered power of the oasis in the ancient city of Linsang, the exchanges between the political, economic and cultural sides became more and more frequent In the meantime, changes have taken place in the political pattern. The countries with stronger powers have merged with weak countries and formed several major regimes, such as Shanshan in the Tarim Basin, Yuzhan, Quci, the rear of the car division and Gaochang and other countries in the future. This political pattern did not change much in quite a long period of time. The stable political landscape makes the Western Regions of this period