The Qiguling CuWMo polymetallic deposit, located in the Yunkai area, is one of the newly discovered deposits with huge prospecting potential. The ore bodies mainly occur as lamellar, stratiods and lenses in skarn. Based on detailed geologic characteristics of the deposit, this study redetermined the metallogenic time of the Qiguling deposit using molybdenite ReOs dating technology. Precise ReOs dating of molybdenite shows that the ReOs model ages of five samples range from 163.6 Ma to 165.3 Ma, with a weighted mean age of 164.54±0.94 Ma, indicating that the timing for CuWMo polymetallic mineralization formed in the late stage of the MidJurassic. Rhenium content of molybdenum in the samples ranges from 76.86~86.22 μg/g, and this indicates the oreforming material is characterized by crust and mantle mixing in origin. δ34S values of pyrites of this deposit have a narrow range of 1.4‰~2.5‰, showing magmatic sulfur. Determination of metallogenic time for the Qiguling CuWMo deposit not only provides an important clue to future prospecting for 150~170 Ma porphyryskarn Cu polymetallic deposits in this area, but also marks the southward extension of the wellknown Qinhang metallogenic belt. Therefore, this study offers new information for further research of diagenesis and metallogenesis of the Qinhang metallogenic belt.