Located in the eastern part of the West Tianshan Mountains, the Airikenqiken ore district, discovered in recent years as a Cu-Mo deposit, possesses an important position in the Middle Asia metallogenetic belt. The main ore-hosting rock is monzogranite. The deposit possesses four banded alliterated belts, namely potassic belt, silicification belt, phyllic belt and propylitization belt, controlled mainly by fractures in the south margin of Nalati. The authors analyzed K-feldspar in ore veins and sericite in rock bodies, and the K/Ar dating results show that the age of metallogenesis is 268.35±4.05 Ma and that of the mineralization is 321.43±4.24 Ma. Elements analyses show that the magmatic body has high Si (SiO₂=71.01%～73.94%), high alkali (Na₂O+K₂O=5.53%～7.80%), low Ca (CaO=1.95%～2.93%), high Sr (>417×10^-6), and low Y (<12.3×10^-6), with the enrichment of LILE (Ba, Th, Rb, K) and depletion of HFSE (Nb, Ta, Ti), whereas trace elements characteristics imply lower-crust related genesis. In addition, fluid inclusions in this deposit are mainly directional fluid intrusions, and most of them are of metamorphism genesis. They have low-temperat ure and low- salinity characteristics, quite different from features of typical porphyry deposits. The authors hold that this district didn't form deposit during magmatic intrusion in Carboniferous period, but it experienced pre-enrichment of metals. Hydrothermal process in Permian period played the most important role in the formation of the ore deposit, which was closely related to the ductile shear zone in that the ductile shear process provided channel and force for the upward migrating ore-forming hydrothermal fluids.