The inconsistent opinions concerning the tectonic setting, the surrounding rock environment and, especially, the age of the wall rocks, have caused much controversy about the metallogenic type of the Kendekeke Fe-Co polymetallic deposit in Qimantag area, East Kunlun Mountains. According to Fusulinida and brachiopod fossils, the authors re-assigned the southern part of the country rock to Lower Permian. LA-ICP-MS zircon U-Pb dating of the dacitic ignimbrite from the north of the deposit yielded the age of 227.1±1.2 Ma, which provides direct evidence for the assigning of this strata to Upper Triassic Elashan Formation. Field investigation and petrographic study have led the authors to believe that the "skarn" on the northern side of the Kendekeke Fe-Co polymetallic deposit should belong to the volcanic middle-high temperature mineralization-alteration zone rather than being a typical skarn. Based on a comprehensive analysis, the authors hold that the mineralization age of the Kendekeke Fe-Co polymetallic deposit should not be earlier than Early Permian, and the main mineralization likely took place in Late Triassic. The metallogenic type may belong to volcanic-hydrothermal polymetallic type. The middle-high temperature mineralization-alteration zone in the lower part of the Upper Triassic Elashan Formation should be one of the important prospecting criteria in search for this kind of Fe-Co polymetallic deposits in this region.