本文主要考察民国时期新疆蒙古族盟旗制度的延续、衰落直至废除的过程。民国时期新疆蒙古族盟旗制度经历了由沿袭清制直至废除改为县制的过程,从1912年至1938年,新疆蒙古族盟旗制度沿袭了清朝的制度,但也逐步走向衰落。自1938年起,新疆省政府逐步废除蒙古族盟旗制度而改行县制。盟旗制度的废除在当时有积极进步意义,为维护新疆的安定起到一定作用。 This article mainly examines the continuation and decline of the Mongolian Union Flag in Xinjiang during the Republic of China until its abolition. During the period of the Republic of China, the Mongolian alliance flag system of Xinjiang went through the process of cleaning up and abolishing the county system. From 1912 to 1938, the system of Mongolian Union Flag of Xinjiang followed the system of Qing Dynasty, but also gradually declined. Since 1938, Xinjiang’s provincial government has gradually abolished the Mongolian Union flag system and diverted the county system. The abolition of the al-Qaeda system had a positive and progressive significance at that time and played a role in safeguarding the security of Xinjiang.