Abstract: In recent years, great local breakthroughs have been made in the exploration of coalbed methane in Upper Permian coal measures in Yibin area of southern Sichuan. It is urgent to optimize the favorable area of coalbed methane so as to promote the large-scale commercial development of coalbed methane. Based on the data of coal seam thickness and gas content in the coal field drilling, combined with the data of core, logging, well test, field desorption and analysis test of shale gas and coalbed methane exploration , the geological conditions of coalbed methane and the potential of coalbed methane resources in the area are analyzed.A comprehensive evaluation was carried out, and geological parameters such as coal seam burial depth, roof and floor lithology, thickness, gas content, coal seam concentration, and coal body structure were selected, and the weighted sum method was used to optimize the coalbed methane favorable area. The results show that the total thickness of coal seams in this area is 3.61-10.02 m, with an average of 6.05 m. Affected by the depositional environment, the vertical distribution of Xuanwei Formation coal seam in the west is relatively concentrated, while the vertical distribution of Longtan Formation coal seams in the East is relatively scattered. The C7 and C8 coal seams of the Xuanwei Formation are distributed vertically. It is relatively concentrated and is the main coal seam for CBM development in this area; the macroscopic coal rock types of coal reservoirs are mainly bright and semi-bright, and there are various types of storage spaces, main6ly developed with intracellular pores, air pores, intergranular pores, etc. The cleats are developed in the coal seam strip, and the pore fracture system structure is reasonable. The gas content of desorption coal seam is 1.03-18.11 m3/t, with an average of 10.53 m3/t; The upper Permian CBM resource in this area is 3 465.22×108 m3, and the resource abundance is 1.87×108 m3/km2. The geological conditions of coalbed methane are similar to those in Mu′ai area, and the abnormally high pressure reservoirs are developed with simple structure. The conditions for coalbed methane accumulation are better. The coal seam in the Xianfeng area has moderate burial depth, thick thickness, high gas content, good coal seam concentration, simple structure, and is dominated by primary-fractured structures. It is a key area for the next coalbed methane exploration.