Abstract: The four known major monometallic high-fluorine porphyry Mo deposits in the east Qinling molybdenum belt(EQMB)–Jinduicheng, Leimengou, Yuchiling, and Donggou-bear a striking similarity in mineralization, hydrothermal alteration, and igneous geochemistry. From west to east, the life span of mineralization age is about 10Ma, and it becomes younger eastward. Sharing considerable similarities in tectonic settings and magmatic and hydrothermal system, the differences between the Climax type deposits formed in mid-to late Tertiary in Colorado mineralization belt and the monometallic high-fluorine porphyry Mo deposits (MFPMD)formed in mid-to late Cretaceous in the EQMB are the mineralization age and grade. Based on the similarities and differences, we propose that the MFPMD are belonged to sub-Climax type deposits.