Exploration practice has proved that reservoirs of lime mud mound type on the lower gentle slope of carbonatite are widely distributed in the formation of the Callovian-Oxfordian Stage at the north margin of the Amu Darya Basin. Identifying the spatial distribution of this type of lime mud mound by petrophysical methods is of great significance for the understanding of the reservoir characteristics of gas fields and the formulation of gas field development strategies. For large-scale bioherms or mounds, the seismic reflection structure appears as a mound-like shape. However, the lime mud mounds on the lower gentle slope of carbonatite generally have a small size, and the mound-shaped seismic reflection structure is not obvious. To effectively identify the spatial distribution of lime mud mounds in this region with seismic data, lime mud mounds are identified and classified first with single-well cores and thin sections, and then the semi-quantitative criteria for identification of lime mud mounds in the target layer are established given the seismic reflection features and waveform features of the target layer and the overlying salt-gypsum beds with plastic deformation. Research results show that: 1. The lithology of lime mud mound sediments on the lower gentle slope of carbonatite is dominated by clotted limestone, siliceous sponge framestone and bioclastic micrite, reflecting a weak hydrodynamic sedimentary environment; 2. The ancient topography formed after carbonatite deposition on the lower gentle slope leads to differences in the thickness of the overlying salt-gypsum bed, further affecting the “augen” deformation of the salt-gypsum bed caused by tectonic compression in the later stage; 3. The overlapping area of the “non-augen” seismic reflection area of the salt-gypsum bed and the seismic chaotic bodies with the attribute value greater than 0.4 in the target layer is the distribution area of lime mud mounds on the lower gentle slope of carbonatite.