Abstract: With the prospecting breakthrough in recent years, the Wanbaoyuan porphyry molybdenum deposit in Liaoning Province enlarges from small-size to middle-size, becoming the most important Mo production base. Trace element geochemical data are analyzed for granodiorite, quartz porphyry, diorite porphyrite, skarn and marble. Five element groups are divided in virtue of R-mode cluster analysis: 1) Au-Bi-Cu; 2) Pb-As-Sn-Sb-Ag; 3) Co-Ni-MnCr; 4) Mo-W; and 5) Zn-Hg. The division is verified also by factor analysis. Based on the characteristics of geology and deposit, the ore elements of Au and Cu enrich in skarn, while Mo enrich in granodiorite and quartz porphyry. The element groups of Au-Bi-Cu and Mo-W can be used as directors for the exploration of such deposits.