Abstract: Coal-fired power plant (CFPP) is one of the most important atmospheric mercury (Hg) sources in China, while studies on the burning anthracite coals of the CFPPs were inadequate. In this study, we investigated the atmospheric Hg emissions and mass balance of a CFPP that burned high ash content anthracite coal in southwestern China. Flue gas was sampled with the Ontario Hydro Method (OHM), and solid samples such as coal, limestone, bottom ash, fly ash, and gypsum were also collected. The CFPP is a pulverized coal (PC) boiler equipped with selective catalytic reduction (SCR), electrostatic precipitator (ESP) and wet flue gas desulfurization (WFGD). The results showed that total Hg content in the flue gas of the final discharging point was 0.60 μg·m^-3, much lower than the national emission limit (30 μg·m^-3). Due to the high ash content in the flue gas, particulate bounded mercury were the main form in flue gas before ESP, hence resulting in a high Hg removal efficiency through ESP. The total Hg removal efficiency for this CFPP was 97.15%, of which, 84.57% was obtained by ESP, 12.58% through WFGD. The Hg emission factor of this CFPP was 3.87 mg Hg·t^-1 coal, which was at lower level among those previously reported. Among the Hg emitted from the CFPP 82.7% was in gaseous elemental form (Hg⁰), 16.6% in gaseous oxidized form (Hg²⁺) and 0.8% in particulate bound form (Hg-P).