Vegetational data from 81 quadrats of Quercus mongolica communities in Mt. Odae and Mt. Jumbong were analysed by applying two multivariate methods : two - way- indicator species analysis(TWNSPAN) for classification and detrended canonical correspondence analysis(DCCA) for ordination. The dominant tree species of Quercus mongolica communities were found in the order of Quercus mongolica, Acer pseudosieboldianum. Tilia amurensis. Carpinus cordata. Acer mono, and Fraxinus rhynchophylla. The forest vegetation of Quercus mongolica community was classified into Quercus mongolica. Quercus mongolica - Carpinus cordata. and Quercus mongolica -Abies nephrolepis groups according to the TWNSPAN. The relationships between the distribution of dominant groups for forest vegetation and soil condition in Quercus mongolica communities were investigated by analysing elevation and soil nutrition gradients. Quercus mongolica group was distributed in the low elevation and poor nutrition area of total nitrogen, Quercus mongolica - Carpinus cordata group was distributed in the low elevation and good nutrition area of Mg^(++) and Ca^(++), while Quercus mongolica Abies nephrolepis group was distributed in =he high elevation and poor nutrition area of Mg^(++) and Ca^(++). The two dominant factors influencing community distribution were elevation and total nitrogen.