Located in eastern Yanliao metallogenic belt, the Siboozi-Liubozi molybdenum-copper deposit in Qinglong County is a newly-discovered medium-sized molybdenum-copper deposit. Mineralization mainly appears in metasomatic and filling forms along bedded planes and fractures, and occurs as veins in quartz sandstone, feldspar-quartz sandstone, and dolomite intercalations in Dahongyu Formation and dolomite in Gaoyuzhuang Formation. Geological features indicate that molybdenite is closely related to silicification. The result suggests that there existed four stages of magmatic intrusion in the ore deposit: the first stage is the Late Triassic(211~206 Ma); the second stage is the Earliest Jurassic (196~190 Ma); the third stage is the late Early Jurassic(177 Ma); and the fourth stage is the early Late Jurassic (160 Ma).