Abstract: There are some questions such as the short operation life of the nozzle and the water-cooling wall was burned out in industrial production. In order to better understand the coal gasification performance, we numerical simulated the GSP gasification process based on Euler-Lagrangian approach. A steady three dimensional multiphase flow model was established by ANSYS/Fluent. The coupling effect of turbulent-chemistry was considered by Species Transport model. The realizable k-ε was used for the gas phase turbulence. The P-1 model was implemented to radial heat transfer. The DPM model was applied to coal particles motion. The numerical results obtained a “∧” shaped flame is in the gasifier, syngas is mainly located in low temperature region and its concentration gradient is larger in the vicinity of flame. Meanwhile, The comparison between the numerical results with actual operating data shows favorable agreement. In addition, the numerical results obtain temperature of the exit was slower than melting temperaure of ash, satisfy the requirement of liquid slagging. It has a certain practical significance for study of pulverized coal gasification process.