本文以第一历史档案馆六份满文档案为核心史料，辅以《乾隆朝宫中档》、《清实录》等文献，考察乾隆二十八年京口离驻汉军旗人的安置、江宁蒙古旗人移驻京口以及汉军出缺与新疆驻防关系等；揭示京口汉军出旗拨补的推动力为伊犁驻防兵力调配，从而成为全国军事部署调整中的一环，同时使旗人生计这一久悬的问题得以解决。

In this paper, based on Six Manchu Historical Archives of the First Historical Archives of China, assisted with " The Archives in Qianlong’s palace," "Qingshilu" and other literatures, in Qianlong’s twenty-eighth year, the resettlement of Jingkou’s Hanjun was studied t, the immigration of Jiangning’s Mongolia banners to Jingkou was also explored, and the relation of vacancy of Hanjun and Xinjiang garrison was discussed, too. It revealed that the leaving-banner’s driving force of Jingkou’s Hanjun was the garrison of Yili, and it became a link of its military deployment of the country, at the same time the livelihood of the banner that existed a long time was disposed.