The southwest Tianshan Orogenic Belt contains abundant copper, lead, and zinc mineral resources. Previously reported deposit types are mostly layer‐controlled conglomerate types. By taking the Kadatamu copper-zinc polymetallic deposit as an example, combined with recent exploration results, a detailed description of the metallogenic background and geological characteristics was presented, and the deposit‐forming mechanism, controlling factors, and prospecting indicators were analyzed. They were then compared with nearby existing deposits. The results show that the Kadatamu copper‐zinc polymetallic deposit is a skarn‐type deposit, controlled by multiple factors including magma, surrounding rocks, and structures. The exposed Hercynian biotite granite in and around the mining area is closely related to copper-lead-zinc polymetallic mineralization, providing not only the thermal conditions for mineralization but also the material source. Calcium‐rich surrounding rocks facilitate skarn formation, and hydrothermal metasomatism helps further enrich the ore elements. The structural control of the mining area is significant, with mineralization mainly associated with NEE‐trending faults. Biotite granite intrudes along NEE‐trending faults, controlling the distribution of ore bodies along the contact zones of surrounding rocks, with the ore body orientations consistent with the fault trends. Faults provide channels for the migration of metallogenic hydrothermal fluids and space for ore deposition. These findings not only enrich the types of copper-lead-zinc deposits in the southwest Tianshan Orogenic Belt but also offer new ideas for exploring similar skarn‐type copper-lead-zinc polymetallic deposits in the region.