Uyghurs were one of the most important and influential ancient nationalities in Dunhuangs' history. They lived there over hundreds of years and left behind rich cultural heritage, such as ancient Uyghur document unearthed in Dunhuang caves, movable wooden Uyghur letters, Buddhist stone caves dug by the Uyghurs in Dunhuang Mogao Caves and Anxi Yulin Caves, and the Uyghur inscriptions written by tourists and believers in cave walls. These are significant in studying Uyghur history and culture, and at the same time, proves that the splendid Dunhuang culture was jointly created by all nationalities including the Uyghurs.