盟旗制度是清代施行于外藩蒙古的核心管理制度。然而该制度完善于雍正至乾隆时期，因文献资料匮乏，该制度如何形成、如何演变，于清朝初期如何运作均付之阙如。而清廷主管此事务的机构理藩院，却在其顺治年间上报题本中涉及该事务。通过顺治年间满文理藩院题本这一“遗留性史料”，探讨清初蒙古会盟制度雏形遂成为可能。本文即依据此全新资料，对盟旗制度形成前，蒙古的会盟情况进行探讨，通过对题本的文本分析，在前人研究的基础上进一步补充、完善清初会盟制度的运行过程，以求使此问题更加清晰明了。

The Banner and League system，as a key institution for administrating Mongolian affairs during the Qing Dynasty， was fully established during the reigns of Emperors Yongzheng and Qianlong． Lacking archival sources，there has been no academic research on the formation，evolution，and operation of this system． However，in its memorials to Emperor Shunzhi，the court for the affairs regulating the outer mongolic government ( Lifanyuan) ，reported on related issues． Therefore the Manchu and Mongolic memorials of the Court for the affairs regulating the outer mongolic government can advance academic research on the alliance system in the early Qing dynasty． On the basis of these memorials and otherresearch，this essay discusses the alliance systems that predated the Banner and League system，and clearly describes their operations．