To quantify TSP, PM₁₀ and PM_2.5 emission characteristics, these parameters were sampled during all processes in a coal-fired power plant. Concentrations of TSP, PM₁₀ and PM_2.5 emitted from boiler were high, and the ratios of PM₁₀/TSP and PM_2.5 /TSP were very low; this result means that the boiler emitted more coarse particles than fine particles. The ESP removed most of the coarse particles. At the FGD inlet the concentrations of TSP, PM₁₀ and PM_2.5 were low, but the ratios of PM₁₀/TSP and PM_2.5/TSP were higher than at the SCR inlet. The ESP removed ~99.8%, of the particulates but only ~99.5% of fine particles (PM₁₀) and ~97.3% of ultrafine particles (PM_2.5). Among the TSPs emitted from the stack, the proportion of PM₁₀ was 80-85% and of this, the proportion of PM_2.5 was 47-56%. Therefore, this study demonstrates that the stack of the plant emitted mostly PM₁₀ and PM_2.5, and that the ESP as the dust remover installed in the plant should be improved to remove the fine particles.