The reservoir heterogeneity of Maokou Formation gas reservoir is strong, the main controlling factors of productivity are complex, and it is difficult to select favorable development areas. Reservoir types include fracture-hole type, hole type and pore type. Among them, fracture-hole type and hole type are high-quality types of reservoirs. Combining the seismic data with well data, the seismic response pattern of high-quality reservoir development area in Longnvsi block is “double peak or lower strong complex wave”. The high-quality reservoirs are mainly distributed in the middle and upper part of the lower sub-segment of second segment of Maokou Formation. For gas wells with high quality reservoir thickness above 4 m, the dynamic reserves of a single well are greater than 20 × 108 m3, and the stable daily gas output is above 20 × 104 m3/d. For gas wells with high quality reservoir thickness between 2 and 4 m, the dynamic reserves of a single well are 5–20 × 108 m3, and the stable daily gas production reaches 10–20 × 104 m3/d. The gas wells with the thickness of high-quality reservoir less than 2 m do not have the potential for profitable development under the current technical conditions. Based on the reservoir thickness, reservoir type, sedimentary characteristics, testing and production conditions, the Maokou Formation gas reservoir in Longnvsi block is divided into three types of development areas, among which the first type of development area has the best conditions, followed by the second type of development area, and the third type of development area has relatively poor conditions.