察合台语是维吾尔文从古文字改为阿拉伯文字后所出现的维吾尔书面语。这种语言自元代(即从十三世纪)起逐渐形成,一直沿用到二十世纪初使用现代维吾尔文字语言为止。所以称它为“察合台语”,是因为在成吉思汗的次子察合台统辖现今新疆和中亚地区时,这种语言曾起过重要 The Chagatai language is Uyghur written language that appears after the Uyghur language is changed from the ancient writing to the Arabic writing. This language has evolved since the Yuan Dynasty (that is, from the thirteenth century) until the early Uighur language of the early twentieth century. Therefore, it is called “Chagatai language” because this language played an important role in the jurisdiction of Chagatai, the second son of Genghis Khan, over the present-day Xinjiang and Central Asia regions