To investigate the combustion characteristics of a high temperature rise axial flow combustor, the model of a high temperature rise axial flow combustor with triple swirler is establised and simulated with steady-state Reynolds-averaged N-S reacting computations. The flow field and combustion characteristics of the high temperature rise axial flow combustor with different structural feature parameters of swirler, primary hole and dilution hole are discussed. The recirculation zone at liner dome and the process of pneumatic spraying and mixing are achieved through the triple swirler. The primary jet could change the shape of recirculation zone and only partial primary jet goes into the primary zone, thus ensuring the fuel-air ratio. The effects of dilution jet trajectory on the flow field and the outlet temperature distribution are explored. The temperature rise and the total pressure drop coefficient of the ten cases of combustors all could reach the standard. The overall temperature distribution factor (OTDF) of the four cases of combustors, i.e., Mode-1-tx、Mode-3、Mode-3-tx、Mode-4-tx, are all less than 0.2, but the radial temperature distribution factor (RTDF) is slightly more than design index. For Mode-5-tx combustor, the OTDF of 0.178 and the RTDF of 0.061 comply with the design requirement, which indicates that the outlet temperature quality of this combustor is the best.