A self-developed software was used to simulate for three-dimensional turbulent kerosene two-phase combustion processes in aero-engine annular combustor with swirl cup. Multi-dimensional empirical analysis method and multi-step reaction flamelet model mechanism were used to calculate pollutant emission levels of annular combustor with swirl cup. Prediction capability of four turbulent combustion models for spray combustion flow field and pollutant emission were analyzed and compared. Calculated results obtained by these models were in reasonable agreement with corresponding experimental data. It shows that these turbulent combustion models can be used to predict two-phase combustion flow fields and pollutant emission of annular combustor with swirl cup. But calculation accuracy of these models are different. Outlet temperature distributions and pollutants emission obtained by the multi-step reaction flamelet model are the closest to the experimental data. Simulation accuracy of the multi-step reaction flamelet model is higher than that of other models. Then it is clear that the calculation accuracy and reliability may be raised by adopting reasonable turbulent combustion model.