Abstract: A large number of strike-slip faults are developed in the Ordovician carbonate strata of Halahatang area in the northern Tarim basin. Fractured-vuggy reservoirs formed along these faults after multiple periods of karstification. Covered by the overlying cap rock and blocked by the lateral tight limestone, the unique “fault-karst trap” formed. Using the high-precision 3D seismic attributes of coherence and amplitude, and combining with drilling data and production performance, the paper comprehensively studies the relationship between strike-slip faults and fault-karst traps in the Halahatang area. The study results show that the strike-slip faults in Halahatang area have a characteristic of “strong activity in the north and weak activity in the south”, the main fault zone in the north of the Halahatang area are mainly composed of braided and horsetail fractures, and the main fault zone in the south of the area are dominated by linear and echelon fractures. The development of 4 types of fault-karst traps such as platy, echelon, braided and foliated traps were controlled by different structure styles, oil and gas migrated along the main faults to branch faults and finally accumulated in the higher positions of the fault-karst bodies. Both the connectivity of the fault-karst bodies and the positions of hydrocarbon enrichment in the fault-karst bodies determine the well production