Biesituobe gabbro, consisting of diopside-augite, enstatite, Ca-rich plagioclase (An: 51~70), and ilmenite-magnetite, intruded into the Carboniferous granite, locates ~30km of the south of Tacheng City, Xinjiang. Zircons separated from this gabbro, containing plagioclase and pyroxene inclusions, show clear sector-zoning pattern. Zircons from two samples were dated to be 273.3 ±1.8Ma (MSWD = 1.18, n = 20) and 272.5 ±2.8Ma (MSWD = 0.75, n = 12) by SHRIMP, respectively. These two U-Pb ages are consistent each other and represent the magma intrusion time of the Biesituobie mafic magma during the Late stage of the Early Permian epoch.