Abstract: Since the gas-solid two-phase particle injection technology is widely used, it is of great engineering significance to study its influencing factors. Firstly, to inverstigate two factors, pre-ssure and mass, experiments are arranged by the orthogonal experimental design principle. Then, based on the CFD-DEM model, the FLUENT software is used for numerical simulation, and the results are analyzed by range analysis and variance analysis. Finally, a set of jet experiments is designed to obtain the particle injection trajectory, and the photographs are processed by color histogram. The following conclusions are drawn: the influence of pressure is greater than that of mass by range analysis and variance analysis, and the mean value is the smallest when the pressure is 0.3 MPa and the mass is 2 g. When the pressure is 0.3 MPa and the mass is 2 g, the injection effect is optimized, and the shooting effect is the best, which is consistent with the results of numerical simulation.