The Dobzha ore-concentration area in the northern Geize County of Tibet is composed of superlarge porphyry copper deposits discovered in recent years. On the basis of previous work and through the rotating orthogonal factor analysis of geochemical data of the core rock samples and the correlation analysis between the metallogenic elements such as Cu and rare earth elements La, Ce, Pr, Nd, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb, Lu and Y and trace elements U and Th, the authors found that LREE and HREE show relative enrichment in the position of Cu ore (mineralization) body, so do trace elements U and Th, especially Th, which show some positive correlation with Cu with the increasing drilling depth.