Abstract: Through the study and the comparison about the fluid inclusion common characteristics, temperature, pressure, salinity, density, fugacity, pH, Eh, total sulfur and total carbon of pyrrhotite-chalcopyrite phase (I phase), sphalerite, galena-sphalerite stage (II stage)and calcite stage (Ⅲ stage)in Dongzhongla lead-Zinc deposit , we can draw a conclusion that Dongzhongla is a medium-low temperature epithermal deposit.

Key words: Dongzhongla lead-zinc deposit, Fluid inclusion, Physicochemical characteristics