The purpose of this study was to pursue historical development in border demarcation through establishing the administrative authority in Qing Dynasty from the perspective of process of forming the border as for the boundary between Korea and Qing Dynasty, and was to examine regional characteristics through comparing this by region. Thus, it analyzed significance of territorialization, which had been progressed by the Chinese government before and after the 20th century. What will need to be paid attention in analyzing administration in the boundary between Korea and Qing before and after the 20th century is a fact that the policy of Qing Dynasty had not been enforced singly by region. Accordingly, this study established a few districts, and compared deviation in each region. 3 large areas in the boundary between Amnok river and Duman river are as follows. Those include Andong-Jian, Linjiang, Baekdu Mountain surrounding area-North Gando. Among them, the Andong area and the North Gando area are being compared. As the immigrants got growing largely from Joseon and inland of Qing before and after the 20th century, the character in the opposite bank of Amnok river and Duman river was changed greatly. The local administration in this region was greatly functioned by the influence of Yiminshibian(移民實邊) and territorialization, which were implemented by the central government. At the same time, the very complex process was produced while being mutually combined or separated a situation such as distribution of economic power centering on the historical and geographical elements in each region, the population structure in Korean residents and Chinese residents, and the land.