The Tuketuke copper deposit, discovered in 2010, is located in the West Junggar region of Xinjiang of northwest China. The deposit is hosted within the Xiaerpu granodiorite (named No.956 highland pluton in the past) that intruded into Early Carboniferous sedimentary strata and its exo-contact zone. Re-Os dating for eight Chalcopyrite samples obtained from three prospecting engineering in the deposit yield a Re-Os isochron age of 288.3±8.8 Ma (2sigma), with an initial 187Os/188Os of 0.0 ± 1.1, a variety of Re content from 39.7×10-9 to 2440.6×10-9, and relative low content of 187Os from 1.2×10-9 to 9.0×10-9. The Re-Os isochron age of the molybdenite is consistent with the peak ages of the magmatic activity in the West Junggar region, which indicates that the deposit is genetically related with an Early Permian metallogenic system. This consistency suggests the relative large potentiality of finding more Cu deposits in the belt.