Transition flow is an important phenomenon in hydrodynamics, it affects the flow development and the flow noise. In this paper, an axisymmetric body is selected as a base model. the Wall Model Large Eddy Simulation (WMLES) is used to capture the transition flow and the pressure pulsation on the surface of the axisymmetric body under the high Reynolds number Re=4.8*10⁷. The vortex structures, pressure pulsation, and other flow parameters are analyzed to study the turbulence transition. According to the results, some mesh generation measures can be summarized to capture the transition flow and pressure pulsation. And in the transition region, the amplitude of pressure pulsation is larger than in the laminar region and turbulent region. In the laminar-turbulent transition region, the vortex structure is complex, which includes laminar vortex and turbulent vortex structures. These studies can provide some references in the future.