Abstract: The fault and the associated network of fracture are the main control elements of hydrocarbon pool-formation in eastern Lungu area, Where Tertiary faults developed. Fault Ⅰ consists of three discordogenic faults of Lunnan, Sangtamu and Lunnan 63, which developed in late Caledonian-early Hercynian, and has sealing process. Glide fault heading for the south and north is Fault Ⅱ, which developed in late Hercynian- Indo Chinese epoch and has tensional process. Adjoint fault heading for northeast and northwest is Fault Ⅲ, which developed amphi east and west of discordogenic fault in early Hercynian. The hydrocarbon pool-formation of Lianglitage Formation, Yijianfang Formation and Yingshan Formation of Ordovician is controlled by Fault Ⅱ and Faults Ⅲ. The fault controls the migration and distribution of oil and gas, the reservoir has the characteristics of multiple infilling, whose stage agrees with the fault movement. Filling point usually lies in the transition and intersection of the fault, oil and gas distribution presents "quasilaminar" and each layer presents "entirely hydrocarbon bearing". Locating wells along the fault is the most valid way to gain high production in Ordovician of this area.

Key words: fault, hydrocarbon pool-formation, Ordovician, eastern Lungu area, Tarim Basin