The particle concentration distribution characteristics of black smoke in a canopy dust catcher were numerically simulated with FLUENT software. The effects of the particle diameter (0.24~11 μm), inlet dust loading (1~7 g/m3) and inlet velocity (10~16 m/s) on the particle concentration profile were calculated with selecting Reynolds stress model (RSM) and Discrete phase model (DPM) as gas phase model and particle phase model, respectively. Simulation results showed that the particle concentration of black smoke in a canopy dust catcher was radially distributed into lowconcentration in the middle areas and highconcentration near the wall. In the same radial cross section, the particle concentration increased with the rise of inlet dust loading, and decreased with the increase of particle diameter and inlet velocity. Furthermore, the simulation results agreed well with the experiment data. The relative error of the pressure drop was less than 6%. These results will provide a basis for the building of a perfect umbrella cover dust model.