Relations between Mongolian and Tibetan is important component of Qing Dynasty ethnic relations, and the relationship between the Mongolian and the Gelug Sect of Tibetan is its important content. On both sides of Tibetan transmitted Buddhism as an intermediary to stop the all-round, multi-level exchanges, not only of the Mongolian and Tibetan nationality and social development occurred a great impact, of the Qing Dynasty with the multi-ethnic country composition and growth has deep influence. The important application of sweat Seigaku and plain near family, Han, Tibet, Mongolia, Russia and other all kinds of documents and materials, to discuss the between Qing Dynasty and Mongolia and the Gelug Sect of Tibetan interaction. Strive to master Qing Dynasty on both sides of the vertical relationship grow clue. In the transverse direction has been summarized and compared, then discuss and remind growth characteristics of the relationship between Qing Dynasty and Mongolia in the Gelug Sect of Tibetan Buddhism, and the deep influence of Chinese multi-ethnic country with the formation and growth of, summed up the modern historical experience and experience from. The full text of the introduction and comment of the two departments. Medium. The introduction part mainly introduces the academic summary of research on the relationship between Qing Dynasty and Mongolia in the Gelug Sect of Tibetan Buddhism, the presence of scores and this paper studies the way and lack and so on. Annotations include theory and on the two departments, therein on department consists of four chapters, emphatically discuss the approached the Mongolian tribes between the Gelug Sect of Tibetan Buddhism and the exchange; on department also consists of four chapters, emphatically discuss the headed by the Dalai Lama the Gelug Sect of Tibetan Buddhism lower influence on Mongolian various soft right and the Qing dynasty rule in Tibet and in fact establish and perfect.