The influence of tangential inclination of rotor blades on the characteristics, flow structure and kinetic energy losses in an axial turbine stage were explored. Calculation models of the stages with tangential inclination of the rotor blades were constructed and 3D-testing gas-dynamic calculations were performed in ANSYS CFX. The graphs of the efficiency index, the degree of reactivity and the coefficient of the total kinetic energy losses at variable rotor frequency were presented. The distributions of the flow parameters (output speed from the turbine stage and the coefficient of kinetic energy losses for the guide vanes and the impellers) were given by the height of the blade. The calculation results between turbine stages with different tangential inclination of the rotor blades were compared. The conclusion about the influences of tangential inclination of the rotor blades and the rational application on the characteristics, flow structure and kinetic energy losses of the axial turbine stages was given.