Abstract: The southeast section of Daxinganling Mts., covering the east region of Inner Mongolia, is an important component of the Daxinganling metallogenetic belt, which involves three structural layers, i. e. Precambrian layer, Paleozoic layer and Mesozoic layer. The fault systems of the structural layers form the structural framework characterized by equal-interval and rhombus. The regional structures control copper-polymetallic mineralization in zone, block, knot, spot and margin. Different forms of structures result in the forming of various genetic types of deposits.