Numerical simulation is adopted to simulate the ignition process of pulverized coal (PC) with less oil in the abundant oxygen ignition combustor in this paper. For this purpose, K-ε turbulence model and conservation equations are applied to describe the turbulent flow in gas phase. The gas phase combustion stimulation and particle dispersion are pictured by Probability Density Function (PDF) and locally instantaneous equilibrium model. Radiation heat transfer is calculated by P1 model. The infection of the different pulverized coal concentration on ignition distance and ignition temperature can be obtained from the numerical simulation results. Different ignition modes with the changes of the pulverized coal concentration are illustrated, which would give an important guide to experiment, design and operation of the ignition combustor with less oil in abundant oxygen, and reference meaning to reconstruct ignition combustor in coal power plant in China.