Sedimentary manganese (Mn) carbonate ores are an important type of Mn deposit, and serve as a critical carrier for investigating the redox state of Earth' s surficial system. The precipitation mechanism, metallogenic process and paleoenvironment reconstruction of sedimentary Mn carbonate deposit are key issues of concern to geologists. In this study, we investigated petrographic, geochemical and C isotopic characteristics of Permian the Zunyi Mn carbonate deposit, to explores the material source, precipitation mechanism, metallogenic environment, and control factors. The Zunyi Mn deposit developed hydrothermal brecciated Mn ores crosscut by Mn- bearing calcite veins, and numerous hydrothermal origin minerals (e.g., chalcopyrite, siegenite, and molybdenite, etc.) were observed in Mn ores. Combined with the element ratio of the authigenic carbonate for Mn ores (e.g. , Fe/Ti, Ni/Co, and Cu/Zn ratios), REY differentiation characteristics, and genesis diagrams reveal that the ore- forming materials originated from the volcanism related hydrothermal activities during the late stage of Middle Permian. The preserved original Fe- Mn oxide residues within Mn carbonate minerals, coupled with Mn ores exhibit high REY concentration (mean 143. 6×10-6) and negative δ13Ccarb value (mean 6. 20‰), and δ13Ccarb value is negatively correlated with MnO content (R2=0. 51) and positively correlated with CaO+MgO content (R2=0. 52), suggesting that Mn carbonates were formed via the diagenetic reduction of Mn oxides. Lithofacies, sedimentary sequences, and redox indicators (e.g., MoEF, UEF, and Ce anomalies) indicate that the basin water column shifted from euxinic- anoxic to suboxic- oxic conditions during Mn precipitation. Integrating the global/regional paleotectonic, paleogeographic and paleoceanic evolution, the Zunyi Mn deposits are product of the combined effects of the coeval paleotectonic- magmatic- hydrothermal activities, paleogeographic, and paleoceanic environmental evolution. The ELIP uplift caused the formation of the Qianzhong rift basin and the rift systems and magmatic- hydrothermal activities within the basin, provided the essential material source, migration channel, and precipitation site for Mn mineralization. The formation of the redox stratified water column within the basin provides the necessary conditions for the initial enrichment of Mn (Ⅱ). The dual effects of the sustained ELIP uplift and large- scale regression driven the bottom water column shift from anoxic to suboxic- oxic conditions, triggering large- scale Mn (Ⅳ) oxides precipitation, and subsequently transformed into Mn carbonates via diagenetic reduction.